evas: sw font draw - protect against null pointer access

The image data of dst could be null in a rare case.
@fix

Reviewed-by: Christopher Michael <devilhorns@comcast.net>
Differential Revision: https://phab.enlightenment.org/D12163

diff --git a/src/lib/evas/common/evas_font_draw.c b/src/lib/evas/common/evas_font_draw.c
index ce9b483..7248fd4 100644 (file)
--- a/src/lib/evas/common/evas_font_draw.c
+++ b/src/lib/evas/common/evas_font_draw.c
@@ -522,6 +522,8 @@ evas_common_font_glyph_draw(RGBA_Font_Glyph *fg,
    DATA32 coltab[16], col;
    DATA16 mtab[16], v;
 
+   if (!dst) return;
+
    // FIXME: Use dw, dh for scaling glyphs...
    (void) dw;
    (void) dh;