hun#2005643 tidy string functions

ChangeLog

@@ -1,6 +1,7 @@
 2010-03-04 Caolán McNamara <cmc at OOo>:
 	* hun#1724558 tidy substring.c a little
 	* hun#1999737 add some malloc checks
+	* hun#2005643 tidy string functions
 
 2010-02-23 László Németh <nemeth at OOo>:
 	* hyphen.c: fix lefthyphenmin calculation for UTF-8 encoded input

csutil.c

@@ -42,9 +42,9 @@ char * mystrdup(const char * s)
 {
   char * d = NULL;
   if (s) {
-     int sl = strlen(s);
-     d = (char *) malloc(((sl+1) * sizeof(char)));
-     if (d) memcpy(d,s,((sl+1)*sizeof(char)));
+     int sl = strlen(s+1);
+     d = (char *) malloc(sl);
+     if (d) memcpy(d,s,sl);
   }
   return d;
 }