Fix various typos and grammatical errors (#141)

These were found by a combination of manual review and a custom script
that checks for common errors.

Also removed an outdated sentence from the comment for setupBefore().

1 files changed, 1 insertions, 1 deletions

diff --git a/pam/pam.c b/pam/pam.c
index bb16427..1859a2f 100644
--- a/pam/pam.c
+++ b/pam/pam.c
@@ -101,7 +101,7 @@ void* copyIntoSecret(void* data) {
 
 void freeSecret(pam_handle_t* pamh, char* data, int error_status) {
   size_t size = strlen(data) + 1;  // Include null terminator
-  // Use volitile function pointer to actually clear the memory.
+  // Use volatile function pointer to actually clear the memory.
   static void* (*const volatile memset_sec)(void*, int, size_t) = &memset;
   memset_sec(data, 0, size);
   munlock(data, size);