examples/*.c: fix incorrect die_codec() usage `die_codec()` should only be used with an initialized codec context. When reporting errors with `aom_codec_enc_config_default()`, `die()` should be used instead. This fixes a potential crash on failure. Change-Id: Id1c42012dbd4c929886372e723c36ee042aad368

diff --git a/examples/lightfield_encoder.c b/examples/lightfield_encoder.c
index 63d72d4..dc8e890 100644
--- a/examples/lightfield_encoder.c
+++ b/examples/lightfield_encoder.c

@@ -434,7 +434,6 @@
   // lf_blocksize X lf_blocksize images will all use the reference image
   // in the middle of the block of images.
   int lf_blocksize;
-  aom_codec_ctx_t codec;
   aom_codec_enc_cfg_t cfg;
   aom_image_t raw;
   aom_image_t raw_shift;
@@ -485,7 +484,8 @@
 
   // Configuration
   res = aom_codec_enc_config_default(encoder, &cfg, 0);
-  if (res) die_codec(&codec, "Failed to get default codec config.");
+  if (res)
+    die("Failed to get default codec config: %s", aom_codec_err_to_string(res));
 
   cfg.g_w = w;
   cfg.g_h = h;

diff --git a/examples/lossless_encoder.c b/examples/lossless_encoder.c
index 194c717..c3d3b93 100644
--- a/examples/lossless_encoder.c
+++ b/examples/lossless_encoder.c

@@ -96,7 +96,8 @@
 
   aom_codec_ctx_t codec;
   res = aom_codec_enc_config_default(encoder, &cfg, 0);
-  if (res) die_codec(&codec, "Failed to get default codec config.");
+  if (res)
+    die("Failed to get default codec config: %s", aom_codec_err_to_string(res));
 
   cfg.g_w = info.frame_width;
   cfg.g_h = info.frame_height;

diff --git a/examples/low_complexity_mode_encoder.c b/examples/low_complexity_mode_encoder.c
index c80326f..902a9e8 100644
--- a/examples/low_complexity_mode_encoder.c
+++ b/examples/low_complexity_mode_encoder.c

@@ -126,7 +126,8 @@
   printf("Using %s\n", aom_codec_iface_name(encoder));
 
   res = aom_codec_enc_config_default(encoder, &cfg, usage);
-  if (res) die_codec(&codec, "Failed to get default codec config.");
+  if (res)
+    die("Failed to get default codec config: %s", aom_codec_err_to_string(res));
 
   cfg.g_w = info.frame_width;
   cfg.g_h = info.frame_height;

diff --git a/examples/scalable_encoder.c b/examples/scalable_encoder.c
index 91d35a2..963b4c3 100644
--- a/examples/scalable_encoder.c
+++ b/examples/scalable_encoder.c

@@ -186,7 +186,8 @@
 
   aom_codec_ctx_t codec;
   res = aom_codec_enc_config_default(encoder, &cfg, 0);
-  if (res) die_codec(&codec, "Failed to get default codec config.");
+  if (res)
+    die("Failed to get default codec config: %s", aom_codec_err_to_string(res));
 
   cfg.g_w = info.frame_width;
   cfg.g_h = info.frame_height;

diff --git a/examples/set_maps.c b/examples/set_maps.c
index 4f41b47..0d03983 100644
--- a/examples/set_maps.c
+++ b/examples/set_maps.c

@@ -167,7 +167,8 @@
   printf("Using %s\n", aom_codec_iface_name(encoder));
 
   res = aom_codec_enc_config_default(encoder, &cfg, usage);
-  if (res) die_codec(&codec, "Failed to get default codec config.");
+  if (res)
+    die("Failed to get default codec config: %s", aom_codec_err_to_string(res));
 
   cfg.g_w = info.frame_width;
   cfg.g_h = info.frame_height;

diff --git a/examples/simple_encoder.c b/examples/simple_encoder.c
index b08f97b..f5ddb3b 100644
--- a/examples/simple_encoder.c
+++ b/examples/simple_encoder.c

@@ -212,7 +212,8 @@
   printf("Using %s\n", aom_codec_iface_name(encoder));
 
   res = aom_codec_enc_config_default(encoder, &cfg, usage);
-  if (res) die_codec(&codec, "Failed to get default codec config.");
+  if (res)
+    die("Failed to get default codec config: %s", aom_codec_err_to_string(res));
 
   cfg.g_w = info.frame_width;
   cfg.g_h = info.frame_height;

diff --git a/examples/twopass_encoder.c b/examples/twopass_encoder.c
index 4d7c653..285bef2 100644
--- a/examples/twopass_encoder.c
+++ b/examples/twopass_encoder.c

@@ -187,7 +187,6 @@
 int main(int argc, char **argv) {
   FILE *infile = NULL;
   int w, h;
-  aom_codec_ctx_t codec;
   aom_codec_enc_cfg_t cfg;
   aom_image_t raw;
   aom_codec_err_t res;
@@ -225,7 +224,8 @@
 
   // Configuration
   res = aom_codec_enc_config_default(encoder, &cfg, 0);
-  if (res) die_codec(&codec, "Failed to get default codec config.");
+  if (res)
+    die("Failed to get default codec config: %s", aom_codec_err_to_string(res));
 
   cfg.g_w = w;
   cfg.g_h = h;