Avoid divide by zero crash if DDX mistakenly returns screen size of 0mm.

1 files changed, 4 insertions, 1 deletions

diff --git a/xrdb.c b/xrdb.c
index 050b4f8..3e01629 100644
--- a/xrdb.c
+++ b/xrdb.c
@@ -489,7 +489,10 @@ DoCmdDefines(String *buff)
 static int 
 Resolution(int pixels, int mm)
 {
-    return ((pixels * 100000 / mm) + 50) / 100;
+    if (mm == 0)
+	return 0;
+    else
+	return ((pixels * 100000 / mm) + 50) / 100;
 }