Add patch for iprange

iprange-return-type.patch

@@ -0,0 +1,17 @@
+--- contrib/iprange/iprange.c.orig	2014-06-27 14:01:26.020159479 -0500
++++ contrib/iprange/iprange.c	2014-06-27 14:01:42.149275554 -0500
+@@ -111,7 +111,7 @@ static void usage(const char *argv0)
+ 		"\n", argv0);
+ }
+ 
+-main(int argc, char **argv)
++int main(int argc, char **argv)
+ {
+ 	char line[MAXLINE];
+ 	int l, lnum;
+@@ -198,4 +198,5 @@ main(int argc, char **argv)
+ 			convert_range(sa, da, he, NULL);
+ 		}
+ 	}
++	exit(0);
+ }