Initialize tp_print in Python 3.8 (GH-3201)

This should complete #3171 in silencing -Wmissing-field-initializers.

Cython/Utility/AsyncGen.c

@@ -424,6 +424,9 @@ static PyTypeObject __pyx_AsyncGenType_type = {
 #if PY_VERSION_HEX >= 0x030800b1
     0,                                          /*tp_vectorcall*/
 #endif
+#if PY_VERSION_HEX >= 0x030800b4 && PY_VERSION_HEX < 0x03090000
+    0,                                          /*tp_print*/
+#endif
 };
 
 
@@ -656,6 +659,9 @@ static PyTypeObject __pyx__PyAsyncGenASendType_type = {
 #if PY_VERSION_HEX >= 0x030800b1
     0,                                          /*tp_vectorcall*/
 #endif
+#if PY_VERSION_HEX >= 0x030800b4 && PY_VERSION_HEX < 0x03090000
+    0,                                          /*tp_print*/
+#endif
 };
 
 
@@ -768,6 +774,9 @@ static PyTypeObject __pyx__PyAsyncGenWrappedValueType_type = {
 #if PY_VERSION_HEX >= 0x030800b1
     0,                                          /*tp_vectorcall*/
 #endif
+#if PY_VERSION_HEX >= 0x030800b4 && PY_VERSION_HEX < 0x03090000
+    0,                                          /*tp_print*/
+#endif
 };
 
 
@@ -1050,6 +1059,9 @@ static PyTypeObject __pyx__PyAsyncGenAThrowType_type = {
 #if PY_VERSION_HEX >= 0x030800b1
     0,                                          /*tp_vectorcall*/
 #endif
+#if PY_VERSION_HEX >= 0x030800b4 && PY_VERSION_HEX < 0x03090000
+    0,                                          /*tp_print*/
+#endif
 };
 
 

Cython/Utility/Coroutine.c

@@ -1526,6 +1526,9 @@ static PyTypeObject __pyx_CoroutineAwaitType_type = {
 #if PY_VERSION_HEX >= 0x030800b1
     0,                                  /*tp_vectorcall*/
 #endif
+#if PY_VERSION_HEX >= 0x030800b4 && PY_VERSION_HEX < 0x03090000
+    0,                                  /*tp_print*/
+#endif
 };
 
 #if PY_VERSION_HEX < 0x030500B1 || defined(__Pyx_IterableCoroutine_USED) || CYTHON_USE_ASYNC_SLOTS
@@ -1680,6 +1683,9 @@ static PyTypeObject __pyx_CoroutineType_type = {
 #if PY_VERSION_HEX >= 0x030800b1
     0,                                  /*tp_vectorcall*/
 #endif
+#if PY_VERSION_HEX >= 0x030800b4 && PY_VERSION_HEX < 0x03090000
+    0,                                  /*tp_print*/
+#endif
 };
 
 static int __pyx_Coroutine_init(void) {
@@ -1788,6 +1794,9 @@ static PyTypeObject __pyx_IterableCoroutineType_type = {
 #if PY_VERSION_HEX >= 0x030800b1
     0,                                  /*tp_vectorcall*/
 #endif
+#if PY_VERSION_HEX >= 0x030800b4 && PY_VERSION_HEX < 0x03090000
+    0,                                  /*tp_print*/
+#endif
 };
 
 
@@ -1893,6 +1902,9 @@ static PyTypeObject __pyx_GeneratorType_type = {
 #if PY_VERSION_HEX >= 0x030800b1
     0,                                  /*tp_vectorcall*/
 #endif
+#if PY_VERSION_HEX >= 0x030800b4 && PY_VERSION_HEX < 0x03090000
+    0,                                  /*tp_print*/
+#endif
 };
 
 static int __pyx_Generator_init(void) {

Cython/Utility/CythonFunction.c

@@ -886,6 +886,9 @@ static PyTypeObject __pyx_CyFunctionType_type = {
 #if PY_VERSION_HEX >= 0x030800b1
     0,                                  /*tp_vectorcall*/
 #endif
+#if PY_VERSION_HEX >= 0x030800b4 && PY_VERSION_HEX < 0x03090000
+    0,                                  /*tp_print*/
+#endif
 };
 
 
@@ -1362,6 +1365,9 @@ static PyTypeObject __pyx_FusedFunctionType_type = {
 #if PY_VERSION_HEX >= 0x030800b1
     0,                                  /*tp_vectorcall*/
 #endif
+#if PY_VERSION_HEX >= 0x030800b4 && PY_VERSION_HEX < 0x03090000
+    0,                                  /*tp_print*/
+#endif
 };
 
 static int __pyx_FusedFunction_init(void) {