Hi,

Gdb recently added -Wmissing-prototypes. This patch fixes the one build 
regression caused by this.

Keith

ChangeLog
2012-03-10  Keith Seitz  <keiths@redhat.com>

	* generic/gdbtk-interp.c (_initialize_gdbtk_interp): Add
	missing prototype to appease -Wmissing-prototypes.