Fix typos.


git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@180598 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/src/locale.cpp b/src/locale.cpp
index c459bed..49c1cf2 100644
--- a/src/locale.cpp
+++ b/src/locale.cpp
@@ -1407,7 +1407,7 @@
     to_nxt = to;
     for (frm_nxt = frm; frm != frm_end && to != to_end; frm = frm_nxt, to = to_nxt)
     {
-        // save state in case needed to reover to_nxt on error
+        // save state in case it is needed to recover to_nxt on error
         mbstate_t save_state = st;
 #ifdef _LIBCPP_LOCALE__L_EXTENSIONS
         size_t n = wcsnrtombs_l(to, &frm_nxt, static_cast<size_t>(fend-frm),
@@ -1476,7 +1476,7 @@
     to_nxt = to;
     for (frm_nxt = frm; frm != frm_end && to != to_end; frm = frm_nxt, to = to_nxt)
     {
-        // save state in case needed to reover to_nxt on error
+        // save state in case it is needed to recover to_nxt on error
         mbstate_t save_state = st;
 #ifdef _LIBCPP_LOCALE__L_EXTENSIONS
         size_t n = mbsnrtowcs_l(to, &frm_nxt, static_cast<size_t>(fend-frm),