SPARC FORCE_RET fix

Annother missing FORCE_RET, this time sparc guest on i386 host.

Paul

Index: target-sparc/op.c
===================================================================
RCS file: /cvsroot/qemu/qemu/target-sparc/op.c,v
retrieving revision 1.14

diff -u -p -r1.14 op.c
@@ -765,6 +765,7 @@ void OPPROTO op_eval_fbue(void)
 {
 // 0 or 3
     T2 = !(FFLAG_SET(FSR_FCC1) ^ FFLAG_SET(FSR_FCC0));
+    FORCE_RET();
 }
 
 void OPPROTO op_eval_fbge(void)