* regcomp.c (p_ere): Workaround incorrect compiler warning.

* regerror.c (regatoi): Return non-const string or compiler complains in
certain inexplicable situations.

winsup/cygwin/regex/regcomp.c

@@ -315,8 +315,8 @@ p_ere(struct parse *p,
 	int stop)		/* character this ERE should end at */
 {
 	char c;
-	sopno prevback;
-	sopno prevfwd;
+	sopno prevback = 0;
+	sopno prevfwd = 0;
 	sopno conc;
 	int first = 1;		/* is this the first alternative? */
 

winsup/cygwin/regex/regerror.c

@@ -178,7 +178,7 @@ regatoi(const regex_t *preg, char *localbuf)
 	if (r->code == 0)
 #ifdef __CYGWIN__ /* Avoid whining compiler */
 	    {
-		static const char null[] = "0";
+		static char null[] = "0";
 		return null;
 	    }
 #else