Fix archive size tag missing cpio trailer size (RhBug:1142949)

- Fixes regression from commit 7f84a126ab43f2d0163911100b4432364d0952a6
  which causes archive size to be determined before closing the archive
  when closing actually writes the cpio trailer into the archive. Thus
  RPMTAG_ARCHIVESIZE (and RPMTAG_LONGARCHIVESIZE) are off by the
  cpio trailer size in all packages built with rpm 4.12.0 and
  pre-releases :(
- Move rpmcpioFree() to rpmfiFree() to allow Tell() on the archive
  after closing it, swap to original order of things on build-side.

index cfb24ef..28834dc 100644
--- build/pack.c
+++ build/pack.c
@@ -55,13 +55,13 @@ static int rpmPackageFilesArchive(rpmfiles fi, int isSrc,
     if (rc == RPMERR_ITER_END)
 	rc = 0;
 
-    if (archiveSize)
-	*archiveSize = (rc == 0) ? rpmfiArchiveTell(archive) : 0;
-
     /* Finish the payload stream */
     if (!rc)
 	rc = rpmfiArchiveClose(archive);
 
+    if (archiveSize)
+	*archiveSize = (rc == 0) ? rpmfiArchiveTell(archive) : 0;
+
     rpmfiFree(archive);
 
     return rc;
index 49fc2c4..384a6c9 100644
--- lib/rpmfi.c
+++ lib/rpmfi.c
@@ -1199,6 +1199,7 @@ rpmfi rpmfiFree(rpmfi fi)
     fi->fn = _free(fi->fn);
     fi->ofn = _free(fi->ofn);
     fi->found = _free(fi->found);
+    fi->archive = rpmcpioFree(fi->archive);
 
     free(fi);
     return NULL;
@@ -1734,7 +1735,6 @@ int rpmfiArchiveClose(rpmfi fi)
     if (fi == NULL)
 	return -1;
     int rc = rpmcpioClose(fi->archive);
-    fi->archive = rpmcpioFree(fi->archive);
     return rc;
 }