Fixed fused_types error test (GH-3979)
Fixed fused_types error test (GH-3979)

It was broken in https://github.com/cython/cython/pull/3976 which added an additional error message.
da-woods/cython,scoder/cython,da-woods/cython,scoder/cython,scoder/cython,cython/cython,da-woods/cython,cython/cython,da-woods/cython,cython/cython,cython/cython,scoder/cython