[pyqgis-console] fix multi-line code execution

Author: slarosa

python/console/console_sci.py

@@ -616,7 +616,7 @@ def excepthook(etype, value, tb):
 
             sys.excepthook = excepthook
 
-            super(ShellScintilla, self).runsource(source, filename, symbol)
+            return super(ShellScintilla, self).runsource(source, filename, symbol)
         finally:
             sys.excepthook = hook