Fix bug in _cairo_gl_has_extension

When check extension, cairo use strstr func.
But there was a problem with how to use it.
So i fix this bug.

Change-Id: I4ff47d73b61e56ae84c465d19c579aff4dc55cf6

diff --git a/src/cairo-gl-info.c b/src/cairo-gl-info.c
index 5da1eac..53ba3d2 100644 (file)
--- a/src/cairo-gl-info.c
+++ b/src/cairo-gl-info.c
@@ -130,7 +130,7 @@ _cairo_gl_has_extension (cairo_gl_dispatch_t *dispatch, const char *ext)
 
        for (i = 0; i < (int)max_num_extensions; i++) {
            const char *extension = (const char *) dispatch->GetStringi (GL_EXTENSIONS, i);
-           if (strstr (extension, ext) == 0)
+           if (strstr (extension, ext) != NULL)
                return TRUE;
        }
        return FALSE;