Make 'make check-spaces' not complain about function pointers returning size_t or double

scripts/maint/checkSpace.pl

@@ -128,7 +128,8 @@ for $fn (@ARGV) {
                 if ($1 ne "if" and $1 ne "while" and $1 ne "for" and
                     $1 ne "switch" and $1 ne "return" and $1 ne "int" and
                     $1 ne "elsif" and $1 ne "WINAPI" and $2 ne "WINAPI" and
-                    $1 ne "void" and $1 ne "__attribute__" and $1 ne "op") {
+                    $1 ne "void" and $1 ne "__attribute__" and $1 ne "op" and
+                    $1 ne "size_t" and $1 ne "double") {
                     print "     fn ():$fn:$.\n";
                 }
             }