avcodec/api-flac-test: clear callers context with close_*

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

libavcodec/api-flac-test.c

@@ -233,17 +233,17 @@ static int run_test(AVCodec *enc, AVCodec *dec, AVCodecContext *enc_ctx,
     return 0;
 }
 
-static int close_encoder(AVCodecContext *enc_ctx)
+static int close_encoder(AVCodecContext **enc_ctx)
 {
-    avcodec_close(enc_ctx);
-    av_freep(&enc_ctx);
+    avcodec_close(*enc_ctx);
+    av_freep(enc_ctx);
     return 0;
 }
 
-static int close_decoder(AVCodecContext *dec_ctx)
+static int close_decoder(AVCodecContext **dec_ctx)
 {
-    avcodec_close(dec_ctx);
-    av_freep(&dec_ctx);
+    avcodec_close(*dec_ctx);
+    av_freep(dec_ctx);
     return 0;
 }
 
@@ -281,8 +281,8 @@ int main(void)
                 return 1;
             if (run_test(enc, dec, enc_ctx, dec_ctx) != 0)
                 return 1;
-            close_encoder(enc_ctx);
-            close_decoder(dec_ctx);
+            close_encoder(&enc_ctx);
+            close_decoder(&dec_ctx);
         }
     }