Merge pull request #8716 from keszybz/two-nitpicks

Two nitpicks

src/basic/copy.c

@@ -69,7 +69,7 @@ static int fd_is_nonblock_pipe(int fd) {
         struct stat st;
         int flags;
 
-        /* Checks whether the specified file descriptor refers to a pipe, and if so if is has O_NONBLOCK set. */
+        /* Checks whether the specified file descriptor refers to a pipe, and if so if O_NONBLOCK is set. */
 
         if (fstat(fd, &st) < 0)
                 return -errno;

src/basic/unit-name.c

@@ -247,8 +247,6 @@ int unit_name_build(const char *prefix, const char *instance, const char *suffix
         assert(suffix);
         assert(ret);
 
-        if (isempty(suffix))
-                return -EINVAL;
         if (suffix[0] != '.')
                 return -EINVAL;