Nikolay Sivov : oleview: Fix a crash on null helpstring and name on library level.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: cd028045f18e2314540c9e4add0d4b0d54bc9157
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=cd028045f18e2314540c9e4add0d4b0d54bc9157

Author: Nikolay Sivov <nsivov at codeweavers.com>
Date:   Fri Dec 31 15:46:50 2010 +0300

oleview: Fix a crash on null helpstring and name on library level.

---

 programs/oleview/typelib.c |   26 ++++++++++++++++----------
 1 files changed, 16 insertions(+), 10 deletions(-)

diff --git a/programs/oleview/typelib.c b/programs/oleview/typelib.c
index 7be31c9..2b69ec4 100644
--- a/programs/oleview/typelib.c
+++ b/programs/oleview/typelib.c
@@ -1227,20 +1227,26 @@ static int PopulateTree(void)
     AddSpaces(tld, TAB_SIZE);
     wsprintfW(wszText, wszFormat2, pTLibAttr->wMajorVerNum, pTLibAttr->wMinorVerNum);
     AddToTLDataStrW(tld, wszText);
-    AddToTLDataStrW(tld, wszComa);
-    AddToTLDataStrW(tld, wszNewLine);
-    AddSpaces(tld, TAB_SIZE);
-    AddToTLDataStrW(tld, wszHelpstring);
-    AddToTLDataStrW(tld, wszOpenBrackets2);
-    AddToTLDataStrW(tld, wszInvertedComa);
-    AddToTLDataStrW(tld, bstrData);
-    AddToTLDataStrW(tld, wszInvertedComa);
-    AddToTLDataStrW(tld, wszCloseBrackets2);
+
+    if (bstrData)
+    {
+        /* helpstring is optional */
+        AddToTLDataStrW(tld, wszComa);
+        AddToTLDataStrW(tld, wszNewLine);
+        AddSpaces(tld, TAB_SIZE);
+        AddToTLDataStrW(tld, wszHelpstring);
+        AddToTLDataStrW(tld, wszOpenBrackets2);
+        AddToTLDataStrW(tld, wszInvertedComa);
+        AddToTLDataStrW(tld, bstrData);
+        AddToTLDataStrW(tld, wszInvertedComa);
+        AddToTLDataStrW(tld, wszCloseBrackets2);
+    }
+
     AddToTLDataStrW(tld, wszNewLine);
     AddToTLDataStrW(tld, wszCloseBrackets1);
     AddToTLDataStrW(tld, wszNewLine);
     AddToTLDataStrW(tld, wszLibrary);
-    AddToTLDataStrW(tld, bstrName);
+    if (bstrName) AddToTLDataStrW(tld, bstrName);
     AddToTLDataStrW(tld, wszNewLine);
     AddToTLDataStrW(tld, wszOpenBrackets3);
     AddToTLDataStrW(tld, wszNewLine);