sip: compile error w/ GCC 14

[Scott Talbert]

Hi Phil,

In GCC 14, my understanding is that incompatible pointer type warnings 
will get turned into errors.  Any chance of getting a fix for this one?

gcc -fno-strict-overflow -Wsign-compare -DDYNAMIC_ANNOTATIONS_ENABLED=1 
-DNDEBUG -fcf-protection -fexceptions -fcf-protection -fexceptions 
-fcf-protection -fexceptions -O2 -flto=auto -ffat-lto-objects -fexceptions 
-g -grecord-gcc-switches -pipe -Wall -Werror=format-security 
-Werror=implicit-function-declaration -Werror=implicit-int 
-Wp,-U_FORTIFY_SOURCE,-D_FORTIFY_SOURCE=3 -Wp,-D_GLIBCXX_ASSERTIONS 
-specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -fstack-protector-strong 
-specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -m64 -mtune=generic 
-fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection 
-fno-omit-frame-pointer -mno-omit-leaf-frame-pointer -fPIC 
-I/usr/include/python3.12 -c siplib.c -o 
build/temp.linux-x86_64-cpython-312/siplib.o
   siplib.c: In function ‘parsePass1’:
   siplib.c:3905:20: warning: assignment to ‘sipSimpleWrapper *’ {aka 
‘struct _sipSimpleWrapper *’} from incompatible pointer type ‘PyObject *’ 
{aka ‘struct _object *’} [-Wincompatible-pointer-types]
    3905 |             *selfp = va_arg(va, PyObject *);
         |                    ^

Thanks,
Scott