Fix wrong Python init return codes

PySide classes had wrong return values in their init code.
In case of errors, they would not show up immediately.

The following modules are affected:
    sources/pyside2/libpyside/pysideclassinfo.cpp
    sources/pyside2/libpyside/pysideproperty.cpp
    sources/pyside2/libpyside/pysidesignal.cpp
    sources/pyside2/libpyside/pysideslot.cpp
    sources/pyside2/PySide2/QtQml/pysideqmlregistertype.cpp

This error exists since Nov 03 2010 .

Fixes: PYSIDE-1077
Change-Id: I8cf9bf7d1d8f8dca1155274cb24408f423557bac
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Cristian Maureira-Fredes <cristian.maureira-fredes@qt.io>

1 files changed, 2 insertions, 2 deletions

diff --git a/sources/pyside2/libpyside/pysideslot.cpp b/sources/pyside2/libpyside/pysideslot.cpp
index 2cdf32626..2f8e69e8f 100644
--- a/sources/pyside2/libpyside/pysideslot.cpp
+++ b/sources/pyside2/libpyside/pysideslot.cpp
@@ -104,7 +104,7 @@ int slotTpInit(PyObject *self, PyObject *args, PyObject *kw)
 
     if (!PyArg_ParseTupleAndKeywords(emptyTuple, kw, "|sO:QtCore." SLOT_DEC_NAME,
                                      const_cast<char **>(kwlist), &argName, &argResult)) {
-        return 0;
+        return -1;
     }
 
     PySideSlot *data = reinterpret_cast<PySideSlot *>(self);
@@ -128,7 +128,7 @@ int slotTpInit(PyObject *self, PyObject *args, PyObject *kw)
     data->slotData->resultType = argResult
         ? PySide::Signal::getTypeName(argResult) : PySide::Signal::voidType();
 
-    return 1;
+    return 0;
 }
 
 PyObject *slotCall(PyObject *self, PyObject *args, PyObject * /* kw */)