Remove duplicate code for fast access to PyThreadState.

Cython/Utility/Exceptions.c

@@ -11,17 +11,8 @@
 
 #if CYTHON_FAST_THREAD_STATE
 #define __Pyx_PyThreadState_declare  PyThreadState *$local_tstate_cname;
+#define __Pyx_PyThreadState_assign  $local_tstate_cname = __Pyx_PyThreadState_Current;
 #define __Pyx_PyErr_Occurred()  $local_tstate_cname->curexc_type
-#if PY_VERSION_HEX >= 0x03060000
-  // Actually added in 3.5.2, but compiling against that does not guarantee that we get imported there.
-  #define __Pyx_PyThreadState_assign  $local_tstate_cname = _PyThreadState_UncheckedGet();
-#elif PY_VERSION_HEX >= 0x03000000
-  #define __Pyx_PyThreadState_assign  $local_tstate_cname = PyThreadState_GET();
-#elif PY_VERSION_HEX >= 0x02070000
-  #define __Pyx_PyThreadState_assign  $local_tstate_cname = _PyThreadState_Current;
-#else
-  #define __Pyx_PyThreadState_assign  $local_tstate_cname = PyThreadState_GET();
-#endif
 #else
 #define __Pyx_PyThreadState_declare
 #define __Pyx_PyThreadState_assign

Cython/Utility/ModuleSetupCode.c

@@ -248,7 +248,8 @@
 #if !CYTHON_FAST_THREAD_STATE || PY_VERSION_HEX < 0x02070000
   #define __Pyx_PyThreadState_Current PyThreadState_GET()
 #if PY_VERSION_HEX >= 0x03060000
-//#elif PY_VERSION_HEX >= 0x03050200
+  //#elif PY_VERSION_HEX >= 0x03050200
+  // Actually added in 3.5.2, but compiling against that does not guarantee that we get imported there.
   #define __Pyx_PyThreadState_Current _PyThreadState_UncheckedGet()
 #elif PY_VERSION_HEX >= 0x03000000
   #define __Pyx_PyThreadState_Current PyThreadState_GET()