shell32: Returns a number of copied bytes in DropQueryFileA.

dlls/shell32/shellole.c

@@ -583,10 +583,10 @@ UINT WINAPI DragQueryFileA(HDROP hDrop, UINT lFile, LPSTR lpszFile, UINT lLength
     }
     filename = malloc(i);
     if (!filename) goto error;
-    WideCharToMultiByte(CP_ACP, 0, filenameW, -1, filename, i, NULL, NULL);
+    i = WideCharToMultiByte(CP_ACP, 0, filenameW, -1, filename, i, NULL, NULL);
 
-    i = strlen(filename);
     lstrcpynA(lpszFile, filename, lLength);
+    i = min(i, lLength) - 1;
 end:
     free(filenameW);
     free(filename);

dlls/shell32/tests/shellole.c

@@ -796,7 +796,7 @@ static LRESULT WINAPI drop_window_proc(HWND hwnd, UINT msg, WPARAM wparam, LPARA
 
         memset(filename, 0xaa, sizeof(filename));
         num = DragQueryFileA(hDrop, 0, filename, 2);
-        todo_wine ok(num == 1, "expected 1, got %u\n", num);
+        ok(num == 1, "expected 1, got %u\n", num);
         ok(filename[0] == expected_filename[0], "expected '%c', got '%c'\n",
            expected_filename[0], filename[0]);
         ok(filename[1] == '\0', "expected nul, got %#x\n", (BYTE)filename[1]);