Added strings.h to parser.c

Author: neauoire

parser.c

@@ -25,6 +25,7 @@
 /* vim: softtabstop=2 shiftwidth=2 expandtab  */
 #include <stdio.h>
 #include <string.h>
+#include <strings.h>
 #include <ctype.h>
 #include <stdlib.h>