Refactor libzfs_error_init newlines

Move the trailing newlines from the error message strings to the format
strings to more closely match the other error messages.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: George Melikov <mail@gmelikov.ru>
Signed-off-by: Ryan Moeller <ryan@ixsystems.com>
Closes #9330

cmd/mount_zfs/mount_zfs.c

@@ -489,7 +489,7 @@ main(int argc, char **argv)
 		zfsutil = 1;
 
 	if ((g_zfs = libzfs_init()) == NULL) {
-		(void) fprintf(stderr, "%s", libzfs_error_init(errno));
+		(void) fprintf(stderr, "%s\n", libzfs_error_init(errno));
 		return (MOUNT_SYSERR);
 	}
 

cmd/zfs/zfs_main.c

@@ -8308,7 +8308,7 @@ main(int argc, char **argv)
 		return (zfs_do_version(argc, argv));
 
 	if ((g_zfs = libzfs_init()) == NULL) {
-		(void) fprintf(stderr, "%s", libzfs_error_init(errno));
+		(void) fprintf(stderr, "%s\n", libzfs_error_init(errno));
 		return (1);
 	}
 

cmd/zinject/zinject.c

@@ -763,7 +763,7 @@ main(int argc, char **argv)
 	uint32_t dvas = 0;
 
 	if ((g_zfs = libzfs_init()) == NULL) {
-		(void) fprintf(stderr, "%s", libzfs_error_init(errno));
+		(void) fprintf(stderr, "%s\n", libzfs_error_init(errno));
 		return (1);
 	}
 

cmd/zpool/zpool_main.c

@@ -9757,7 +9757,7 @@ main(int argc, char **argv)
 		return (zpool_do_version(argc, argv));
 
 	if ((g_zfs = libzfs_init()) == NULL) {
-		(void) fprintf(stderr, "%s", libzfs_error_init(errno));
+		(void) fprintf(stderr, "%s\n", libzfs_error_init(errno));
 		return (1);
 	}
 

lib/libzfs/libzfs_util.c

@@ -69,21 +69,21 @@ libzfs_error_init(int error)
 	case ENXIO:
 		return (dgettext(TEXT_DOMAIN, "The ZFS modules are not "
 		    "loaded.\nTry running '/sbin/modprobe zfs' as root "
-		    "to load them.\n"));
+		    "to load them."));
 	case ENOENT:
 		return (dgettext(TEXT_DOMAIN, "/dev/zfs and /proc/self/mounts "
 		    "are required.\nTry running 'udevadm trigger' and 'mount "
-		    "-t proc proc /proc' as root.\n"));
+		    "-t proc proc /proc' as root."));
 	case ENOEXEC:
 		return (dgettext(TEXT_DOMAIN, "The ZFS modules cannot be "
 		    "auto-loaded.\nTry running '/sbin/modprobe zfs' as "
-		    "root to manually load them.\n"));
+		    "root to manually load them."));
 	case EACCES:
 		return (dgettext(TEXT_DOMAIN, "Permission denied the "
-		    "ZFS utilities must be run as root.\n"));
+		    "ZFS utilities must be run as root."));
 	default:
 		return (dgettext(TEXT_DOMAIN, "Failed to initialize the "
-		    "libzfs library.\n"));
+		    "libzfs library."));
 	}
 }