[FFmpeg-cvslog] ffplay: Fix realloc_texture when input texture is NULL.

ffmpeg | branch: release/4.0 | Matt Oliver | Tue Apr 10 23:01:18 2018 +1000| [29328d96b90fc20048803201b379c6c6a18661b4] | committer: Marton Balint ffplay: Fix realloc_texture when input texture is NULL. SDL_QueryTexture and SDL_DestroyTexture require that the input

[FFmpeg-cvslog] ffplay: Fix realloc_texture when input texture is NULL.

ffmpeg | branch: master | Matt Oliver | Tue Apr 10 23:01:18 2018 +1000| [6be690685a8876a61f87b2b8bf30547e09030a96] | committer: Matt Oliver ffplay: Fix realloc_texture when input texture is NULL. SDL_QueryTexture and SDL_DestroyTexture require that the input texture