regression in cling: a final `;` is expected after `int a,b`

Up until LCG91 the interpreter happily swallowed the expression int a,b (without a final semicolumn). Now it expects the user to conclude the statement somehow (a semicolumn works):

# on master:

~ root -l

root [0] int a, b

root (cont'ed, cancel with .@) [1]

# on lxplus7:

[eguiraud@lxplus043 ~]$ which root

/cvmfs/sft.cern.ch/lcg/views/LCG_91/x86_64-centos7-gcc62-opt/bin/root

[eguiraud@lxplus043 ~]$ root -l -b

root [0] int a, b

(int) 0

root [1] 

This reflects in a hard error when using `int a,b` in a cell of a ROOT notebook: since the statement is not "finished" the cell cannot be interpreted correctly anymore.