PR c/66220: Fix false positive from -Wmisleading-indentation

PR c/66220: Fix false positive from -Wmisleading-indentation

gcc/c-family/ChangeLog:
	PR c/66220:
	* c-indentation.c (should_warn_for_misleading_indentation): Use
	expand_location rather than expand_location_to_spelling_point.
	Don't warn if the guarding statement is more indented than the
	next/body stmts.

gcc/testsuite/ChangeLog:
	PR c/66220:
	* c-c++-common/Wmisleading-indentation.c (fn_35): New.
	(fn_36): New.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@224041 138bc75d-0d04-0410-961f-82ee72b054a4