tests/api/api-seek-test: check all compute_crc_of_packets() calls

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

tests/api/api-seek-test.c

@@ -248,11 +248,12 @@ static int seek_test(const char *input_filename, const char *start, const char *
         return -1;
 
     for (i = start_ts; i < end_ts; i += 100) {
-        for (j = i + 100; j < end_ts; j += 100)
+        for (j = i + 100; j < end_ts; j += 100) {
             result = compute_crc_of_packets(fmt_ctx, video_stream, ctx, fr, i, j, 0);
             if (result != 0)
                 return -1;
         }
+    }
 
     av_freep(&crc_array);
     av_freep(&pts_array);