Fixed forum-7172: NullReferenceException in C# parser when "fixed" keyword was used incorrectly.

git-svn-id: svn://svn.sharpdevelop.net/sharpdevelop/trunk@2794 1ccf3a8d-04fe-1044-b7c0-cef0b8235c61

src/Libraries/NRefactory/Project/Src/Parser/CSharp/Parser.cs

@@ -3809,7 +3809,7 @@ out embeddedStatement);
 out type);
 
 #line  1554 "cs.ATG" 
-			if (type.PointerNestingLevel == 0) Error("can only fix pointer types");
+			if (type == null || type.PointerNestingLevel == 0) Error("can only fix pointer types");
 			List<VariableDeclaration> pointerDeclarators = new List<VariableDeclaration>(1);
 			
 			Identifier();

src/Libraries/NRefactory/Project/Src/Parser/CSharp/cs.ATG

@@ -1551,7 +1551,7 @@ EmbeddedStatement<out Statement statement>
 	|	"unsafe" Block<out embeddedStatement>  (. statement = new UnsafeStatement(embeddedStatement); .)
 		/*--- fixed statement: */
 	|	"fixed"
-		"(" Type<out type>     (. if (type.PointerNestingLevel == 0) Error("can only fix pointer types");
+		"(" Type<out type>     (. if (type == null || type.PointerNestingLevel == 0) Error("can only fix pointer types");
 		                          List<VariableDeclaration> pointerDeclarators = new List<VariableDeclaration>(1);
 		                       .)
 		Identifier             (. string identifier = t.val; .)