Fix pipe I/O stream descriptor leak in init_service_resolver()

Detected by cppcheck.
Signed-off-by: Thomas Jarosch <thomas.jarosch@intra2net.com>

misc/ss.c

@@ -518,6 +518,7 @@ void init_service_resolver(void)
 				}
 			}
 		}
+		pclose(fp);
 	}
 }