* configure: Rebuild.

	* configure: Rebuild.
	* configure.ac (build_warnings): Add -Wempty-body.
	* m68k-tdep.c (m68k_gdbarch_init): Remove empty 'if'.
	* remote.c (handle_notification): Use braces for empty 'else' body.
	* s390-tdep.c (s390_analyze_prologue): Use braces for empty
	'else' body.
	* sh64-tdep.c (sh64_push_dummy_call): Use braces for empty
	'else' body.
	* solib-som.c (som_relocate_section_addresses): Use braces
	for empty 'else' body.
	* ui-file.c (stdio_file_write): Use braces for empty 'if' body.
	(stdio_file_write_async_safe, stdio_file_fputs): Likewise.