trivial: fix spelling in code comments

Based-on-patch-by: Rafael Fontenelle <rafaelff@gnome.org>

src/basic/env-util.c

@@ -114,7 +114,7 @@ bool strv_env_is_valid(char **e) {
                 if (!env_assignment_is_valid(*p))
                         return false;
 
-                /* Check if there are duplicate assginments */
+                /* Check if there are duplicate assignments */
                 k = strcspn(*p, "=");
                 STRV_FOREACH(q, p + 1)
                         if (strneq(*p, *q, k) && (*q)[k] == '=')
@@ -388,7 +388,7 @@ int strv_env_replace(char ***l, char *p) {
         assert(p);
 
         /* Replace first occurrence of the env var or add a new one in the
-         * string list. Drop other occurences. Edits in-place. Does not copy p.
+         * string list. Drop other occurrences. Edits in-place. Does not copy p.
          * p must be a valid key=value assignment.
          */
 

src/basic/hashmap.h

@@ -15,7 +15,7 @@
  * necessary to instantiate an object for each Hashmap use.
  *
  * If ENABLE_DEBUG_HASHMAP is defined (by configuring with --enable-debug=hashmap),
- * the implemention will:
+ * the implementation will:
  * - store extra data for debugging and statistics (see tools/gdb-sd_dump_hashmaps.py)
  * - perform extra checks for invalid use of iterators
  */

src/basic/hexdecoct.c

@@ -79,7 +79,7 @@ static int unhex_next(const char **p, size_t *l) {
         assert(l);
 
         /* Find the next non-whitespace character, and decode it. We
-         * greedily skip all preceeding and all following whitespace. */
+         * greedily skip all preceding and all following whitespace. */
 
         for (;;) {
                 if (*l == 0)
@@ -647,7 +647,7 @@ static int unbase64_next(const char **p, size_t *l) {
         assert(l);
 
         /* Find the next non-whitespace character, and decode it. If we find padding, we return it as INT_MAX. We
-         * greedily skip all preceeding and all following whitespace. */
+         * greedily skip all preceding and all following whitespace. */
 
         for (;;) {
                 if (*l == 0)

src/basic/parse-util.c

@@ -570,7 +570,7 @@ int parse_fractional_part_u(const char **p, size_t digits, unsigned *res) {
 
         s = *p;
 
-        /* accept any number of digits, strtoull is limted to 19 */
+        /* accept any number of digits, strtoull is limited to 19 */
         for (i=0; i < digits; i++,s++) {
                 if (*s < '0' || *s > '9') {
                         if (i == 0)

src/basic/path-util.c

@@ -425,7 +425,7 @@ int path_compare(const char *a, const char *b) {
         assert(a);
         assert(b);
 
-        /* A relative path and an abolute path must not compare as equal.
+        /* A relative path and an absolute path must not compare as equal.
          * Which one is sorted before the other does not really matter.
          * Here a relative path is ordered before an absolute path. */
         d = (a[0] == '/') - (b[0] == '/');

src/basic/process-util.c

@@ -425,7 +425,7 @@ int is_kernel_thread(pid_t pid) {
                 q += l;
         }
 
-        /* Skip preceeding whitespace */
+        /* Skip preceding whitespace */
         l = strspn(q, WHITESPACE);
         if (l < 1)
                 return -EINVAL;

src/basic/time-util.c

@@ -905,7 +905,7 @@ int parse_timestamp(const char *t, usec_t *usec) {
                  * Otherwise just cut it off. */
                 with_tz = !STR_IN_SET(tz, tzname[0], tzname[1]);
 
-                /* Cut off the timezone if we dont need it. */
+                /* Cut off the timezone if we don't need it. */
                 if (with_tz)
                         t = strndupa(t, last_space - t);