Follow-up on top of js/mingw-use-utf8

A quick fix for a patch that is already in next.

Johannes Schindelin (1):
mingw: fix possible buffer overrun when calling GetUserNameW()

 compat/mingw.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

base-commit: 94238859b9809afc806919cb7022a45cdc8e6748
Published-As: https://github.com/gitgitgadget/git/releases/tag/pr-283%2Fdscho%2Fmingw-use-utf8-fixup-v1
Fetch-It-Via: git fetch https://github.com/gitgitgadget/git pr-283/dscho/mingw-use-utf8-fixup-v1
Pull-Request: https://github.com/gitgitgadget/git/pull/283

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From: Johannes Schindelin <[email protected]>

In 39a98e9b68b8 (mingw: get pw_name in UTF-8 format, 2019-06-27), this developer missed the fact that the GetUserNameW() function takes the number of characters as len parameter, not the number of bytes.

---
 compat/mingw.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

index b8a62bf914..a0eb695653 100644
@@ -1952,7 +1952,7 @@ struct passwd *getpwuid(int uid)
 	if (initialized)
 		return p;
 
-	len = sizeof(buf);
+	len = ARRAY_SIZE(buf);
 	if (!GetUserNameW(buf, &len)) {
 		initialized = 1;
 		return NULL;

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