*: merge some common strings

text   data    bss    dec    hexfilename
 838650   8009      0 846659  ceb43busybox_old
 838519   8009      0 846528  ceac0busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

e2fsprogs/fsck.c

@@ -307,7 +307,7 @@ static void load_fs_info(const char *filename)
 
 	fstab = setmntent(filename, "r");
 	if (!fstab) {
-		bb_perror_msg("can't read %s", filename);
+		bb_perror_msg("can't read '%s'", filename);
 		return;
 	}