Fix test for finding source lines

IPython/core/tests/test_oinspect.py

@@ -47,7 +47,7 b' ip = get_ipython()'
 # defined, if any code is inserted above, the following line will need to be
 # updated.  Do NOT insert any whitespace between the next line and the function
 # definition below.
-THIS_LINE_NUMBER = 49  # Put here the actual number of this line
+THIS_LINE_NUMBER = 50  # Put here the actual number of this line
 def test_find_source_lines():
     nt.assert_equal(oinspect.find_source_lines(test_find_source_lines), 
                     THIS_LINE_NUMBER+1)