make error messages more concise

graftcp.c

@@ -582,7 +582,7 @@ int client_main(int argc, char **argv)
 		case 'a':
 			cmd_conf.local_addr = strdup(optarg);
 			if (cmd_conf.local_addr == NULL) {
-				perror("strdup failed to allocate memory");
+				perror("strdup");
 				exit(1);
 			}
 			break;
@@ -593,21 +593,21 @@ int client_main(int argc, char **argv)
 		case 'f':
 			cmd_conf.pipe_path = strdup(optarg);
 			if (cmd_conf.pipe_path == NULL) {
-				perror("strdup failed to allocate memory");
+				perror("strdup");
 				exit(1);
 			}
 			break;
 		case 'b':
 			cmd_conf.blackip_file_path = strdup(optarg);
 			if (cmd_conf.blackip_file_path == NULL) {
-				perror("strdup failed to allocate memory");
+				perror("strdup");
 				exit(1);
 			}
 			break;
 		case 'w':
 			cmd_conf.whiteip_file_path = strdup(optarg);
 			if (cmd_conf.whiteip_file_path == NULL) {
-				perror("strdup failed to allocate memory");
+				perror("strdup");
 				exit(1);
 			}
 			break;
@@ -618,14 +618,14 @@ int client_main(int argc, char **argv)
 		case 'c':
 			conf_file_path = strdup(optarg);
 			if (conf_file_path == NULL) {
-				perror("strdup failed to allocate memory");
+				perror("strdup");
 				exit(1);
 			}
 			break;
 		case 'u':
 			cmd_conf.username = strdup(optarg);
 			if (cmd_conf.username == NULL) {
-				perror("strdup failed to allocate memory");
+				perror("strdup");
 				exit(1);
 			}
 			break;
@@ -695,7 +695,7 @@ int client_main(int argc, char **argv)
 		run_uid = pent->pw_uid;
 		run_home = strdup(pent->pw_dir);
 		if (run_home == NULL) {
-			perror("strdup failed to allocate memory");
+			perror("strdup");
 			exit(1);
 		}
 	}