Warning in new GIN code

The rather ancient gcc on my HPUX box is complaining thusly about HEAD:

ginbtree.c: In function `ginPlaceToPage':
ginbtree.c:602: warning: control reaches end of non-void function

I would imagine this would happen on any compiler that doesn't recognize
the hint about elog(ERROR) not returning. Could we stick a dummy return
at the end?

}
else
+ {
elog(ERROR, "unknown return code from GIN placeToPage method: %d", rc);
+ return false; /* keep compiler quiet */
+ }
}

regards, tom lane