CLEANUP: fix typos in comments for contrib/spoa_example
Fixes 3 common typos in the comments of the contrib/spoa_example
subsystem.
diff --git a/contrib/spoa_example/include/mini-clist.h b/contrib/spoa_example/include/mini-clist.h
index 0560456..a89255c 100644
--- a/contrib/spoa_example/include/mini-clist.h
+++ b/contrib/spoa_example/include/mini-clist.h
@@ -57,7 +57,7 @@
#define LIST_NEXT(lh, pt, el) (LIST_ELEM((lh)->n, pt, el))
-/* returns a pointer of type <pt> to a structure preceeding the element
+/* returns a pointer of type <pt> to a structure preceding the element
* which contains list head <lh>, which is known as element <el> in
* struct pt.
*/
diff --git a/contrib/spoa_example/include/spop_functions.h b/contrib/spoa_example/include/spop_functions.h
index 8319e41..e77d38b 100644
--- a/contrib/spoa_example/include/spop_functions.h
+++ b/contrib/spoa_example/include/spop_functions.h
@@ -124,7 +124,7 @@
/* Encode a buffer, possibly partially. It does the same thing than
* 'spoe_encode_buffer', but if there is not enough space, it does not fail.
* On success, it returns the number of copied bytes and <*buf> is moved after
- * the encoded value. If an error occured, it returns -1. */
+ * the encoded value. If an error occurred, it returns -1. */
static inline int
spoe_encode_frag_buffer(const char *str, size_t len, char **buf, char *end)
{
@@ -176,7 +176,7 @@
/* Encode a typed data using value in <data> and type <type>. On success, it
* returns the number of copied bytes and <*buf> is moved after the encoded
- * value. If an error occured, it returns -1.
+ * value. If an error occurred, it returns -1.
*
* If the value is too big to be encoded, depending on its type, then encoding
* failed or the value is partially encoded. Only strings and binaries can be