stb: Ignore some warnings coming from stb_image.h
diff --git a/common/stb/stb_image.c b/common/stb/stb_image.c
index 857bfd40..9ddbbd2f 100644
--- a/common/stb/stb_image.c
+++ b/common/stb/stb_image.c
@@ -1,3 +1,6 @@
+#pragma GCC diagnostic ignored "-Wunused-parameter"
+#pragma GCC diagnostic ignored "-Wunused-function"
+
#define STB_IMAGE_IMPLEMENTATION
#include <stb/stb_image.h>
