Palette_delta_encoding: compile fix.

s/uint16/uint16_t/

Issue introduced in https://aomedia-review.googlesource.com/c/11148/

Change-Id: I77cb5865828adef98976863fafa2ecbb907290a5
diff --git a/av1/decoder/decodemv.c b/av1/decoder/decodemv.c
index 2604ead..af226fa 100644
--- a/av1/decoder/decodemv.c
+++ b/av1/decoder/decodemv.c
@@ -648,8 +648,8 @@
 #if CONFIG_PALETTE_DELTA_ENCODING
 #if CONFIG_HIGHBITDEPTH
 static int uint16_compare(const void *a, const void *b) {
-  const uint16 va = *(const uint16 *)a;
-  const uint16 vb = *(const uint16 *)b;
+  const uint16_t va = *(const uint16_t *)a;
+  const uint16_t vb = *(const uint16_t *)b;
   return va - vb;
 }
 #else