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ShellPkg: Do NULL pointer check before the pointer is used. 

Do NULL pointer check before the pointer is used to avoid dereferenced.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Qiu Shumin <shumin.qiu@intel.com>
Reviewed-by: Jaben Carsey <jaben.carsey@intel.com>
This commit is contained in:
Qiu Shumin 2016-02-22 10:21:38 +08:00
parent e1695f8dcf
commit e3b76f3b5e
1 changed files with 1 additions and 1 deletions
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2
ShellPkg/Library/UefiShellLib/UefiShellLib.c
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@ -4071,7 +4071,7 @@ ShellFileHandleReturnLine(
Status = ShellFileHandleReadLine(Handle, RetVal, &Size, FALSE, Ascii);
}
if (Status == EFI_END_OF_FILE && *RetVal != CHAR_NULL) {
if (Status == EFI_END_OF_FILE && RetVal != NULL && *RetVal != CHAR_NULL) {
Status = EFI_SUCCESS;
}
if (EFI_ERROR(Status) && (RetVal != NULL)) {