Multiple packages: package size mismatches

Environment: OpenWrt 19.07.0-rc2 r10775-db8345d8e4 on a TP-Link TL-WDR3600 (target ar71xx generic)

Description: attempting to install some packages results in failure:

opkg install xinetd openssl-util ca-certificates
Installing xinetd (2.3.15-5) to root...
Downloading http://downloads.openwrt.org/releases/19.07.0-rc2/packages/mips_24kc/packages/xinetd_2.3.15-5_mips_24kc.ipk
Installing openssl-util (1.1.1d-2) to root...
Downloading http://downloads.openwrt.org/releases/19.07.0-rc2/packages/mips_24kc/base/openssl-util_1.1.1d-2_mips_24kc.ipk
Installing ca-certificates (20190110-1) to root...
Downloading http://downloads.openwrt.org/releases/19.07.0-rc2/packages/mips_24kc/base/ca-certificates_20190110-1_all.ipk
Collected errors:
 * opkg_install_pkg: Package size mismatch: xinetd is 49992 bytes, expecting 49989 bytes
 * opkg_install_cmd: Cannot install package xinetd.
 * opkg_install_pkg: Package size mismatch: openssl-util is 239246 bytes, expecting 239244 bytes
 * opkg_install_cmd: Cannot install package openssl-util.
 * opkg_install_pkg: Package size mismatch: ca-certificates is 125595 bytes, expecting 125601 bytes
 * opkg_install_cmd: Cannot install package ca-certificates.

Start by reproducing the opkg install xinetd openssl-util ca-certificates command on the OpenWrt 19.07.0-rc2 package source described in the report. Compare the downloaded .ipk sizes with the expected values in the package metadata; the issue is complete when the affected packages install without size-mismatch errors.