tcg/ia64: Only one call output register needed for 64 bit hosts

The second register is never used for ia64 hosts.

Cc: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: NStefan Weil <weil@mail.berlios.de>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

tcg/ia64/tcg-target.c

@@ -172,9 +172,8 @@ static const int tcg_target_call_iarg_regs[8] = {
     TCG_REG_R63,
 };
 
-static const int tcg_target_call_oarg_regs[2] = {
-    TCG_REG_R8,
-    TCG_REG_R9
+static const int tcg_target_call_oarg_regs[] = {
+    TCG_REG_R8
 };
 
 /* maximum number of register used for input function arguments */