lavfi/vulkan: allow calling glslang_uninit without a prior init

Allows us to uninit cleanly.
This assert was also somewhat pointless as we assert every other
function, so another assert would be triggered long before this
one is.

diff --git a/libavfilter/glslang.cpp b/libavfilter/glslang.cpp
index 125eb5c364bad0b3f016a4321377b85c38534dcc..986bddd789d0b42bab547097e2326fc82b38a298 100644 (file)
--- a/libavfilter/glslang.cpp
+++ b/libavfilter/glslang.cpp
@@ -235,8 +235,7 @@ int glslang_init(void)
 void glslang_uninit(void)
 {
     pthread_mutex_lock(&glslang_mutex);
-    av_assert0(glslang_refcount > 0);
-    if (--glslang_refcount == 0)
+    if (glslang_refcount && (--glslang_refcount == 0))
         FinalizeProcess();
     pthread_mutex_unlock(&glslang_mutex);
 }