scrrun: Correct FileExists for directories.

dlls/scrrun/filesystem.c

@@ -215,11 +215,13 @@ static HRESULT WINAPI filesys_DriveExists(IFileSystem3 *iface, BSTR DriveSpec,
 
 static HRESULT WINAPI filesys_FileExists(IFileSystem3 *iface, BSTR path, VARIANT_BOOL *ret)
 {
+    DWORD attrs;
     TRACE("%p %s %p\n", iface, debugstr_w(path), ret);
 
     if (!ret) return E_POINTER;
 
-    *ret = GetFileAttributesW(path) != INVALID_FILE_ATTRIBUTES ? VARIANT_TRUE : VARIANT_FALSE;
+    attrs = GetFileAttributesW(path);
+    *ret = attrs != INVALID_FILE_ATTRIBUTES && !(attrs & FILE_ATTRIBUTE_DIRECTORY) ? VARIANT_TRUE : VARIANT_FALSE;
     return S_OK;
 }
 

dlls/scrrun/tests/filesystem.c

@@ -82,6 +82,20 @@ static void test_interfaces(void)
     ok(b == VARIANT_FALSE, "got %x\n", b);
     SysFreeString(path);
 
+    path = SysAllocString(file_path);
+    b = VARIANT_FALSE;
+    hr = IFileSystem3_FileExists(fs3, path, &b);
+    ok(hr == S_OK, "got 0x%08x, expected 0x%08x\n", hr, S_OK);
+    ok(b == VARIANT_TRUE, "got %x\n", b);
+    SysFreeString(path);
+
+    path = SysAllocString(windows_path);
+    b = VARIANT_TRUE;
+    hr = IFileSystem3_FileExists(fs3, path, &b);
+    ok(hr == S_OK, "got 0x%08x, expected 0x%08x\n", hr, S_OK);
+    ok(b == VARIANT_FALSE, "got %x\n", b);
+    SysFreeString(path);
+
     /* Folder Exists */
     hr = IFileSystem3_FolderExists(fs3, NULL, NULL);
     ok(hr == E_POINTER, "got 0x%08x, expected 0x%08x\n", hr, E_POINTER);