Merge branch 'mingw-load-sys-dlls'

This patch has been carried by Git for Windows for almost two years. It
makes loading system libraries safer.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

compat/mingw.c

@@ -1797,7 +1797,8 @@ static void ensure_socket_initialization(void)
 			WSAGetLastError());
 
 	for (name = libraries; *name; name++) {
-		ipv6_dll = LoadLibrary(*name);
+		ipv6_dll = LoadLibraryExA(*name, NULL,
+					  LOAD_LIBRARY_SEARCH_SYSTEM32);
 		if (!ipv6_dll)
 			continue;
 

contrib/credential/wincred/git-credential-wincred.c

@@ -75,7 +75,8 @@ static CredDeleteWT CredDeleteW;
 static void load_cred_funcs(void)
 {
 	/* load DLLs */
-	advapi = LoadLibrary("advapi32.dll");
+	advapi = LoadLibraryExA("advapi32.dll", NULL,
+				LOAD_LIBRARY_SEARCH_SYSTEM32);
 	if (!advapi)
 		die("failed to load advapi32.dll");