[PATCH v2 4/6] win32u: check if tmAveCharWidth is 0 before division.

[Tarcísio Ladeia de Oliveira]

From: Tarcísio Ladeia de Oliveira

tmAveCharWidth and font->aveWidth are apparently unrelated, so both
should be checked.
---
 dlls/win32u/font.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/dlls/win32u/font.c b/dlls/win32u/font.c
index a5e64294182..46ac012b4e1 100644
--- a/dlls/win32u/font.c
+++ b/dlls/win32u/font.c
@@ -4118,7 +4118,7 @@ static void scale_outline_font_metrics( const struct gdi_font *font, OUTLINETEXT
 {
     double scale_x, scale_y;

-    if (font->aveWidth)
+    if (font->aveWidth && font->otm.otmTextMetrics.tmAveCharWidth)
     {
         scale_x = (double)font->aveWidth;
         scale_x /= (double)font->otm.otmTextMetrics.tmAveCharWidth;
@@ -4333,7 +4333,7 @@ static void scale_font_metrics( struct gdi_font *font, TEXTMETRICW *tm )
         font->aveWidth = 0;
     }

-    if (font->aveWidth)
+    if (font->aveWidth && font->otm.otmTextMetrics.tmAveCharWidth)
     {
         scale_x = (double)font->aveWidth;
         scale_x /= (double)font->otm.otmTextMetrics.tmAveCharWidth;