Fixed bug in ReadAttrString(): The resulting string was one character longer, when the string in the attribute was null terminated.

git-svn-id: file:///srv/svn/repos/haiku/trunk/current@1437 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/kits/storage/Node.cpp

@@ -569,7 +569,7 @@ BNode::ReadAttrString(const char *name, BString *result) const
 	// Null terminate the new string just to be sure (since it *is*
 	// possible to read and write non-NULL-terminated strings)
 	data[bytes] = 0;		
-	result->UnlockBuffer(bytes+1);	
+	result->UnlockBuffer();
 	return error;
 }