Merge branch 'array-add-assert' into 'main'

util: assert alloc is consistent with data in wl_array_add()

See merge request wayland/wayland!515

src/wayland-util.c

@@ -24,6 +24,7 @@
  * SOFTWARE.
  */
 
+#include <assert.h>
 #include <errno.h>
 #include <stdlib.h>
 #include <stdint.h>
@@ -121,6 +122,8 @@ wl_array_add(struct wl_array *array, size_t size)
 		alloc *= 2;
 
 	if (array->alloc < alloc) {
+		assert(array->alloc > 0 || array->data == NULL);
+
 		if (array->alloc > 0)
 			data = realloc(array->data, alloc);
 		else