Fix static analysis warnings

With this fix the number of warnings from deep analysis is 2 (excluding
warnings in third_party). Shallow analysis ends with no warnings

Change-Id: I680379dc2e55dcd5fbe86a6f445719e5e7b41112

av1/common/convolve.c

diff --git a/av1/common/convolve.c b/av1/common/convolve.c
index 5a55ece..85baf45 100644
--- a/av1/common/convolve.c
+++ b/av1/common/convolve.c
@@ -121,6 +121,7 @@
   int16_t im_block[(MAX_SB_SIZE + MAX_FILTER_TAP - 1) * MAX_SB_SIZE];
   int im_h = h + filter_params_y->taps - 1;
   int im_stride = w;
+  assert(w <= MAX_SB_SIZE && h <= MAX_SB_SIZE);
   const int fo_vert = filter_params_y->taps / 2 - 1;
   const int fo_horiz = filter_params_x->taps / 2 - 1;
   const int bd = 8;
@@ -704,6 +705,7 @@
   int16_t im_block[(MAX_SB_SIZE + MAX_FILTER_TAP - 1) * MAX_SB_SIZE];
   int im_h = h + filter_params_y->taps - 1;
   int im_stride = w;
+  assert(w <= MAX_SB_SIZE && h <= MAX_SB_SIZE);
   const int fo_vert = filter_params_y->taps / 2 - 1;
   const int fo_horiz = filter_params_x->taps / 2 - 1;
   const int bits =

av1/common/warped_motion.c

diff --git a/av1/common/warped_motion.c b/av1/common/warped_motion.c
index e232e10..0c91cfd 100644
--- a/av1/common/warped_motion.c
+++ b/av1/common/warped_motion.c
@@ -574,7 +574,6 @@
                         CONVERT_TO_BYTEPTR(tmp), j, i, warp_w, warp_h,
                         WARP_ERROR_BLOCK, subsampling_x, subsampling_y, bd,
                         &conv_params);
-
       gm_sumerr += highbd_frame_error(
           tmp, WARP_ERROR_BLOCK, CONVERT_TO_SHORTPTR(dst8) + j + i * p_stride,
           warp_w, warp_h, p_stride, bd);