h264: error out from decode_nal_units() when AV_EF_EXPLODE is set

Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>

libavcodec/h264.c

@@ -1593,7 +1593,9 @@ again:
                 break;
             case NAL_SEI:
                 init_get_bits(&h->gb, ptr, bit_length);
-                ff_h264_decode_sei(h);
+                ret = ff_h264_decode_sei(h);
+                if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE))
+                    goto end;
                 break;
             case NAL_SPS:
                 init_get_bits(&h->gb, ptr, bit_length);
@@ -1613,7 +1615,9 @@ again:
                 break;
             case NAL_PPS:
                 init_get_bits(&h->gb, ptr, bit_length);
-                ff_h264_decode_picture_parameter_set(h, bit_length);
+                ret = ff_h264_decode_picture_parameter_set(h, bit_length);
+                if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE))
+                    goto end;
                 break;
             case NAL_AUD:
             case NAL_END_SEQUENCE:
@@ -1630,7 +1634,9 @@ again:
             }
 
             if (context_count == h->max_contexts) {
-                ff_h264_execute_decode_slices(h, context_count);
+                ret = ff_h264_execute_decode_slices(h, context_count);
+                if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE))
+                    goto end;
                 context_count = 0;
             }
 
@@ -1649,8 +1655,11 @@ again:
             }
         }
     }
-    if (context_count)
-        ff_h264_execute_decode_slices(h, context_count);
+    if (context_count) {
+        ret = ff_h264_execute_decode_slices(h, context_count);
+        if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE))
+            goto end;
+    }
 
 end:
     /* clean up */