[mutter/zbrown/header-fixes: 3/3] cogl: Export cogl_blend_string_error_quark

[Marge Bot <marge-bot src gnome org>]

commit cfe6cda6948abce6b587ef67e00a1717b6e78ca2
Author: Zander Brown <zbrown gnome org>
Date:   Mon Jul 5 22:58:50 2021 +0100

    cogl: Export cogl_blend_string_error_quark
    
    Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1916>

 cogl/cogl/cogl-types.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/cogl/cogl/cogl-types.h b/cogl/cogl/cogl-types.h
index 30c908b640..cd92b2ecd3 100644
--- a/cogl/cogl/cogl-types.h
+++ b/cogl/cogl/cogl-types.h
@@ -237,7 +237,7 @@ typedef enum /*< prefix=COGL_BLEND_STRING_ERROR >*/
   COGL_BLEND_STRING_ERROR_GPU_UNSUPPORTED_ERROR
 } CoglBlendStringError;
 
-uint32_t
+COGL_EXPORT uint32_t
 cogl_blend_string_error_quark (void);
 
 #define COGL_SYSTEM_ERROR (_cogl_system_error_quark ())