Two more columnNumber() calls that should be positionInBlock()

columnNumber() relies on text wrapping, and we're only interested in the
position of the cursor in the block.

src/libs/cplusplus/ASTPath.h

@@ -51,7 +51,7 @@ public:
     {}
 
     QList<AST *> operator()(const QTextCursor &cursor)
-    { return this->operator()(cursor.blockNumber(), cursor.columnNumber()); }
+    { return this->operator()(cursor.blockNumber(), cursor.positionInBlock()); }
 
     /// line and column are 0-based!
     QList<AST *> operator()(int line, int column);

src/plugins/cpptools/cppcodecompletion.cpp

@@ -640,7 +640,7 @@ bool CppCodeCompletion::triggersCompletion(TextEditor::ITextEditable *editor)
             if (TextEditor::BaseTextEditor *edit = qobject_cast<TextEditor::BaseTextEditor *>(editor->widget())) {
                 QTextCursor tc(edit->document());
                 tc.setPosition(pos);
-                return tc.columnNumber() == 1;
+                return tc.positionInBlock() == 1;
             }
 
             return false;