fixed uninitialized variable

Author: uzairnawaz

libc/src/__support/wchar/mbstate.h

@@ -25,7 +25,7 @@ struct mbstate {
     Increases with each push(...) until it reaches total_bytes
     Decreases with each pop(...) until it reaches 0
   */
-  uint8_t bytes_stored;
+  uint8_t bytes_stored = 0;
 
   // Total number of bytes that will be needed to represent this character
   uint8_t total_bytes = 0;

libc/src/__support/wchar/wcrtomb.cpp

@@ -34,7 +34,7 @@ ErrorOr<size_t> wcrtomb(char *__restrict s, wchar_t wc,
     return Error(status);
 
   size_t count = 0;
-  while (!cr.isComplete()) {
+  while (!cr.isEmpty()) {
     auto utf8 = cr.pop_utf8(); // can never fail as long as the push succeeded
     LIBC_ASSERT(utf8.has_value());
 

libc/src/wchar/wcrtomb.cpp

@@ -9,6 +9,7 @@
 #include "src/wchar/wcrtomb.h"
 
 #include "hdr/types/mbstate_t.h"
+#include "hdr/types/wchar_t.h"
 #include "src/__support/common.h"
 #include "src/__support/libc_errno.h"
 #include "src/__support/macros/config.h"