Fix bug because reactionSystem.T and .P are now Quantities.
Fix bug because reactionSystem.T and .P are now Quantities.

This change was made in 1e71484e9357d746cb3736dce046fa320d08f4e2

nyee/RMG-Py,faribas/RMG-Py,comocheng/RMG-Py,nickvandewiele/RMG-Py,comocheng/RMG-Py,KEHANG/RMG-Py,chatelak/RMG-Py,KEHANG/RMG-Py,enochd/RMG-Py,faribas/RMG-Py,chatelak/RMG-Py,enochd/RMG-Py,nickvandewiele/RMG-Py,pierrelb/RMG-Py,nyee/RMG-Py,pierrelb/RMG-Py