mem: uninline av_malloc(z)_array()

Inlining public functions hardcodes their implementation into the ABI,
so it should be avoided unless there is a very good reason for it. No
such reason exists in this case.

libavutil/mem.c

@@ -138,6 +138,20 @@ int av_reallocp(void *ptr, size_t size)
     return 0;
 }
 
+void *av_malloc_array(size_t nmemb, size_t size)
+{
+    if (!size || nmemb >= INT_MAX / size)
+        return NULL;
+    return av_malloc(nmemb * size);
+}
+
+void *av_mallocz_array(size_t nmemb, size_t size)
+{
+    if (!size || nmemb >= INT_MAX / size)
+        return NULL;
+    return av_mallocz(nmemb * size);
+}
+
 void *av_realloc_array(void *ptr, size_t nmemb, size_t size)
 {
     if (!size || nmemb >= INT_MAX / size)