Add the missing check for NULL pointer before use it.

[mirror_edk2.git] / MdeModulePkg / Universal / SetupBrowserDxe / Ui.h

diff --git a/MdeModulePkg/Universal/SetupBrowserDxe/Ui.h b/MdeModulePkg/Universal/SetupBrowserDxe/Ui.h
index 45fb3eba3efaaced2b38e0e4003c4749a34ed7a3..6b651037149b3ff6ff3479bed8d90d3d09df1234 100644 (file)
--- a/MdeModulePkg/Universal/SetupBrowserDxe/Ui.h
+++ b/MdeModulePkg/Universal/SetupBrowserDxe/Ui.h
@@ -623,6 +623,8 @@ ClearLines (
   hit, then 2 Unicode character will consume an output storage\r
   space with size of CHAR16 till a NARROW_CHAR is hit.\r
 \r
+  If String is NULL, then ASSERT ().\r
+\r
   @param String          The input string to be counted.\r
 \r
   @return Storage space for the input string.\r