Fix MSVC build for changes to binaryheap.

After 5af0263afd, binaryheap.c needs to be listed in Mkvcbuild.pm.
Per buildfarm.

src/tools/msvc/Mkvcbuild.pm

@@ -135,7 +135,7 @@ sub mkvcbuild
 	}
 
 	our @pgcommonallfiles = qw(
-	  archive.c base64.c checksum_helper.c compression.c
+	  archive.c base64.c binaryheap.c checksum_helper.c compression.c
 	  config_info.c controldata_utils.c d2s.c encnames.c exec.c
 	  f2s.c file_perm.c file_utils.c hashfn.c ip.c jsonapi.c
 	  keywords.c kwlookup.c link-canary.c md5_common.c percentrepl.c