sh.c (sh_va_arg): Initinalize lab_over.

	* config/sh/sh.c (sh_va_arg): Initinalize lab_over.
	* config/sh/sh.h (CONST_OK_FOR_J16): Use parentheses.
	(MODE_AFTER): Add cast appropriately.
	* config/sh/sh.md (movdi splitter): Likewise.
	(casesi_worker_2): Add const qualifier appropriately.
	(eh_return): Remove unused variable.
	(insv): Initialize v;

From-SVN: r84337