Also set the actions read matrix when the combined matrix is set. Fixes a segfault in the regrouping layer, which expects that the actions read matrix is always set.
Also set the actions read matrix when the combined matrix is set.
Fixes a segfault in the regrouping layer, which expects that the actions read matrix is always set.

utwente-fmt/ltsmin,Meijuh/ltsmin,Sybe/composition,Meijuh/ltsmin,vbloemen/ltsmin,Meijuh/ltsmin,utwente-fmt/ltsmin,vbloemen/ltsmin,lordqwerty/ltsmin,vbloemen/ltsmin,Sybe/composition,alaarman/ltsmin,alaarman/ltsmin,alaarman/ltsmin,lordqwerty/ltsmin,utwente-fmt/ltsmin,trolando/ltsmin,buschko/ltsmin,Meijuh/ltsmin,vbloemen/ltsmin,alaarman/ltsmin,Meijuh/ltsmin,vbloemen/ltsmin,Meijuh/ltsmin,Sybe/composition,Sybe/composition,utwente-fmt/ltsmin,alaarman/ltsmin,utwente-fmt/ltsmin,trolando/ltsmin,trolando/ltsmin,utwente-fmt/ltsmin,vbloemen/ltsmin,lordqwerty/ltsmin,buschko/ltsmin,buschko/ltsmin,buschko/ltsmin,vbloemen/ltsmin,lordqwerty/ltsmin,alaarman/ltsmin,trolando/ltsmin