Last of the spelling fixed

cde/programs/dtmail/libDtMail/Common/IO.C

@@ -931,7 +931,7 @@ struct vmount   **vmountpp)     /* place to tell where buffer is */
 /*
  * perform the QUERY mntctl - if it returns > 0, that is the
  * number of vmount structures in the buffer.  If it returns
- * -1, an error occured.  If it returned 0, then look in
+ * -1, an error occurred.  If it returned 0, then look in
  * first word of buffer for needed size.
  */
         if ((nmounts = mntctl(MCTL_QUERY, size, (caddr_t)vm)) > 0) {

cde/programs/dtmail/libDtMail/Common/libDtMail.msg

@@ -21,7 +21,7 @@ $quote "
 
 $set 1 libDtMail API set
 $ // DTME_NoError
-1 "No error occured."
+1 "No error occurred."
 
 $ // DTME_AlreadyLocked
 2 "The folder is locked by another session."