SIGXX should be removed from the calling process's signal mask, when catched signal exceptions ?

[blocky2019]

`
int ut_example()
{

    e4c_using_context(E4C_TRUE) {
    int * pointer = NULL;
    try {
        int oops = *pointer;
    }
    catch (BadPointerException) {
        printf("No problem ;-)");
        fflush(stdout);
    }
}

}

int main()
{

while (true)
{
    ut_example();
    sleep(5);
}

}
`

Output:
No problem ;-)
Segmentation fault (core dumped)

[blocky2019]

FIX:
Add a line ' sigrelse(signal_number); ' in function '_e4c_library_handle_signal' (e4c.c)