csvutils: add a patch to correctly use ctype(3) functions

csvutils/distinfo

@@ -4,3 +4,4 @@ SHA1 (csvutils-0.9.3.tgz) = 0153f39f899c85cdf276316ebadfa4b2b537c7b3
 RMD160 (csvutils-0.9.3.tgz) = 0805b32ac3df05a399bdf0028114985afd3118d7
 Size (csvutils-0.9.3.tgz) = 47046 bytes
 SHA1 (patch-Makefile) = fa6490dc31fa4b55898f0c1ec24a933192fc2a31
+SHA1 (patch-src_csvgrep.c) = 402b7eaea8c4db04ba76e86ecc65e66e397c4427

csvutils/patches/patch-src_csvgrep.c

@@ -0,0 +1,15 @@
+$NetBSD$
+
+Properly use toupper(3).
+
+--- src/csvgrep.c.orig	2008-07-27 17:45:20.000000000 +0000
++++ src/csvgrep.c
+@@ -778,7 +778,7 @@ main (int argc, char *argv[])
+       /* Upcase string for case insensitive fixed match*/
+       char *ptr = pattern;
+       while (*ptr)
+-        *ptr = toupper(*ptr), ptr++;
++        *ptr = toupper((unsigned char)*ptr), ptr++;
+     }
+   } else if (match_type == PCRE) {
+     #ifdef WITHOUT_PCRE