eh static data

eh static data

Fix another case of oss-fuzz tripping over gas static state,
ie. starting over testing another input file with rubbish left
uncleared in bss.  size_end_sym pointed at garbage.

	* ehopt.c (get_cie_info): Delete forward declaration.
	(struct frame_data): Move to file scope.
	(frame): New static, packaged..
	(check_eh_frame): ..eh_frame_data and debug_frame_data.
	(eh_begin): New function.
	* as.c (gas_init): Call eh_begin.
	* as.h (eh_begin): Declare.