scrrun: Check for null arguments in MoveFile.

dlls/scrrun/filesystem.c

@@ -3758,6 +3758,9 @@ static HRESULT WINAPI filesys_MoveFile(IFileSystem3 *iface, BSTR source, BSTR de
 {
     TRACE("%p %s %s\n", iface, debugstr_w(source), debugstr_w(destination));
 
+    if(!source || !destination)
+        return E_INVALIDARG;
+
     return MoveFileW(source, destination) ? S_OK : create_error(GetLastError());
 }
 

dlls/scrrun/tests/filesystem.c

@@ -2591,6 +2591,13 @@ static void test_MoveFile(void)
     hr = IFileSystem3_DeleteFile(fs3, str, VARIANT_TRUE);
     ok(hr == S_OK, "Unexpected hr %#lx.\n", hr);
     SysFreeString(str);
+
+    str = SysAllocString(L"null.txt");
+    hr = IFileSystem3_MoveFile(fs3, str, NULL);
+    ok(hr == E_INVALIDARG, "Unexpected hr %#lx.\n", hr);
+    hr = IFileSystem3_MoveFile(fs3, NULL, str);
+    ok(hr == E_INVALIDARG, "Unexpected hr %#lx.\n", hr);
+    SysFreeString(str);
 }
 
 static void test_DoOpenPipeStream(void)