Bug#909906: jh_installlibs --version-strip="+.*": Quantifier follows nothing in regex

[Adrian Bunk]

Package: javatools
Version: 0.66
Severity: serious
Control: affects -1 src:jython

https://tests.reproducible-builds.org/debian/rb-pkg/unstable/amd64/jython.html

...
   debian/rules override_jh_installlibs
make[1]: Entering directory '/build/1st/jython-2.7.1+repack'
jh_installlibs --version-strip="+.*"
Quantifier follows nothing in regex; marked by <-- HERE in m/+ <-- HERE .*/ at /usr/bin/jh_installlibs line 111.
make[1]: *** [debian/rules:89: override_jh_installlibs] Error 25