kernel32: Don't try to load an empty initialization file.

dlls/kernel32/profile.c

@@ -322,7 +322,7 @@ static PROFILESECTION *PROFILE_Load(HANDLE hFile, ENCODING * pEncoding)
     TRACE("%p\n", hFile);
     
     dwFileSize = GetFileSize(hFile, NULL);
-    if (dwFileSize == INVALID_FILE_SIZE)
+    if (dwFileSize == INVALID_FILE_SIZE || dwFileSize == 0)
         return NULL;
 
     buffer_base = HeapAlloc(GetProcessHeap(), 0 , dwFileSize);

dlls/kernel32/tests/profile.c

@@ -865,10 +865,7 @@ static void test_WritePrivateProfileString(void)
            "key=string\r\n";
     ret = WritePrivateProfileStringA("", "key", "string", path);
     ok(ret == TRUE, "Expected TRUE, got %d\n", ret);
-    todo_wine
-    {
-        ok(check_file_data(path, data), "File doesn't match\n");
-    }
+    ok(check_file_data(path, data), "File doesn't match\n");
     DeleteFileA(path);
 
     /* NULL lpKeyName */