user32/tests: Remove unnecessary char array and add additional test in test_FindWindowEx.

dlls/user32/tests/win.c

@@ -6931,24 +6931,23 @@ todo_wine
 static void test_FindWindowEx(void)
 {
     HWND hwnd, found;
-    CHAR title[1];
 
     hwnd = CreateWindowExA( 0, "MainWindowClass", "caption", WS_POPUP, 0,0,0,0, 0, 0, 0, NULL );
     ok( hwnd != 0, "CreateWindowExA error %d\n", GetLastError() );
 
-    title[0] = 0;
-
-    found = FindWindowExA( 0, 0, "MainWindowClass", title );
+    found = FindWindowExA( 0, 0, "MainWindowClass", "" );
     ok( found == NULL, "expected a NULL hwnd\n" );
     found = FindWindowExA( 0, 0, "MainWindowClass", NULL );
     ok( found == hwnd, "found is %p, expected a valid hwnd\n", found );
+    found = FindWindowExA( 0, 0, "MainWindowClass", "caption" );
+    ok( found == hwnd, "found is %p, expected a valid hwnd\n", found );
 
     DestroyWindow( hwnd );
 
     hwnd = CreateWindowExA( 0, "MainWindowClass", NULL, WS_POPUP, 0,0,0,0, 0, 0, 0, NULL );
     ok( hwnd != 0, "CreateWindowExA error %d\n", GetLastError() );
 
-    found = FindWindowExA( 0, 0, "MainWindowClass", title );
+    found = FindWindowExA( 0, 0, "MainWindowClass", "" );
     ok( found == hwnd, "found is %p, expected a valid hwnd\n", found );
     found = FindWindowExA( 0, 0, "MainWindowClass", NULL );
     ok( found == hwnd, "found is %p, expected a valid hwnd\n", found );
@@ -6956,7 +6955,7 @@ static void test_FindWindowEx(void)
     DestroyWindow( hwnd );
 
     /* test behaviour with a window title that is an empty character */
-    found = FindWindowExA( 0, 0, "Shell_TrayWnd", title );
+    found = FindWindowExA( 0, 0, "Shell_TrayWnd", "" );
     ok( found != NULL, "found is NULL, expected a valid hwnd\n" );
     found = FindWindowExA( 0, 0, "Shell_TrayWnd", NULL );
     ok( found != NULL, "found is NULL, expected a valid hwnd\n" );