windows does not support Process.kill("TERM", pid) (#1026)

Author: YO4

lib/irb/pager.rb

@@ -34,7 +34,12 @@ def page(retain_content: false)
       # So to properly terminate the pager with Ctrl-C, we need to catch `IRB::Abort` and kill the pager process
       rescue IRB::Abort
         begin
-          Process.kill("TERM", pid) if pid
+          begin
+            Process.kill("TERM", pid) if pid
+          rescue Errno::EINVAL
+            # SIGTERM not supported (windows)
+            Process.kill("KILL", pid)
+          end
         rescue Errno::ESRCH
           # Pager process already terminated
         end