fix: sdk: editor: Calculate absolute positions based on line/col prop…

…erly - fixes #2123

rn=

(integrated from the KomodoIDE master branch change 8043ff1 by Mitchell <mitchellb@activestate.com>)

Komodo/KomodoIDE@8043ff1

src/chrome/komodo/content/sdk/editor.js

@@ -976,7 +976,7 @@ var sdkEditor = function(_scintilla, _scimoz) {
     this._posToAbsolute = function(pos)
     {
         if ( ! pos.line ) pos.line = this.getLineNumber();
-        return scimoz().positionFromLine(pos.line-1) + (pos.ch || 0);
+        return scimoz().findColumn(pos.line-1, pos.ch || 0);
     }
 
 };