tree-wide: remove consecutive duplicate words in comments (#5148)

src/basic/proc-cmdline.c

@@ -148,7 +148,7 @@ int proc_cmdline_get_key(const char *key, unsigned flags, char **value) {
          * a) The "value" parameter is used. In this case a parameter beginning with the "key" string followed by "="
          *    is searched, and the value following this is returned in "value".
          *
-         * b) as above, but the PROC_CMDLINE_VALUE_OPTIONAL flag is set. In this case if the the key is found as a
+         * b) as above, but the PROC_CMDLINE_VALUE_OPTIONAL flag is set. In this case if the key is found as a
          *    separate word (i.e. not followed by "=" but instead by whitespace or the end of the command line), then
          *    this is also accepted, and "value" is returned as NULL.
          *

src/nspawn/nspawn-stub-pid1.c

@@ -87,7 +87,7 @@ int stub_pid1(sd_id128_t uuid) {
 
         /* Flush out /proc/self/environ, so that we don't leak the environment from the host into the container. Also,
          * set $container= and $container_uuid= so that clients in the container that query it from /proc/1/environ
-         * find them set set. */
+         * find them set. */
         sd_id128_to_string(uuid, new_environment + sizeof(new_environment) - SD_ID128_STRING_MAX);
         reset_environ(new_environment, sizeof(new_environment));
 

src/veritysetup/veritysetup-generator.c

@@ -76,10 +76,10 @@ static int create_device(void) {
 
         r = unit_name_from_path(u, ".device", &d);
         if (r < 0)
-                return log_error_errno(r, "Failed to to generate unit name: %m");
+                return log_error_errno(r, "Failed to generate unit name: %m");
         r = unit_name_from_path(v, ".device", &e);
         if (r < 0)
-                return log_error_errno(r, "Failed to to generate unit name: %m");
+                return log_error_errno(r, "Failed to generate unit name: %m");
 
         f = fopen(p, "wxe");
         if (!f)