added return for ARM case (may be incorrect - need checking)

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@319 c046a42c-6fe2-441c-8c8c-71466251a162

exec.h

@@ -225,6 +225,7 @@ label ## n:\
     T0 = (long)(tbparam) + (n);\
     EIP = eip;\
 dummy_label ## n:\
+    return;\
 } while (0)
 
 #endif