# HG changeset patch
# User Matti Hamalainen <ccr@tnsp.org>
# Date 1588088303 -10800
# Node ID 6f627f4f11db784b9002a90061ff1a12059d84a4
# Parent  ec6a3790a91b312495a32e672fbbf68d211175b1
Fix th_strncasecmp() edge case.

diff -r ec6a3790a91b -r 6f627f4f11db th_string.c
--- a/th_string.c	Mon Apr 27 03:33:48 2020 +0300
+++ b/th_string.c	Tue Apr 28 18:38:23 2020 +0300
@@ -511,7 +511,7 @@
         n--;
     }
 
-    return th_tolower(*s1) - th_tolower(*s2);
+    return (n == 0) ? 0 : th_tolower(*s1) - th_tolower(*s2);
 }