#12 showCFG failed on right-click

[Zagorsky Anton]

1)
Cursor position doesn't change when user make right-click in file source, so showCFG (from mouse popup menu) called with parameters where are old cursor positions.

2)
right-click in Context window on function name cause popup menu with Show CFG command, AND strange thing: cursor in file source became to last symbol in last line, so Show CFG command create EMPTY_GRAPH.