lavf: Reset the entry count and allocation size variables on av_reallocp failures

When av_reallocp fails, the associated variables that keep track of
the number of elements in the array (and in some cases, the
separate number of allocated elements) need to be reset.

Not all of these might technically be needed, but it's better to
reset them if in doubt, to make sure variables don't end up
conflicting.

Signed-off-by: Martin Storsjö <martin@martin.st>

1 files changed, 4 insertions, 1 deletions

diff --git a/libavformat/rtmphttp.c b/libavformat/rtmphttp.c
index 5de1857a28..89a661435c 100644
--- a/libavformat/rtmphttp.c
+++ b/libavformat/rtmphttp.c
@@ -89,8 +89,11 @@ static int rtmp_http_write(URLContext *h, const uint8_t *buf, int size)
     if (rt->out_size + size > rt->out_capacity) {
         int err;
         rt->out_capacity = (rt->out_size + size) * 2;
-        if ((err = av_reallocp(&rt->out_data, rt->out_capacity)) < 0)
+        if ((err = av_reallocp(&rt->out_data, rt->out_capacity)) < 0) {
+            rt->out_size = 0;
+            rt->out_capacity = 0;
             return err;
+        }
     }
 
     memcpy(rt->out_data + rt->out_size, buf, size);