patch 7.4.1747

Problem:    Coverity: missing check for NULL pointer.
Solution:   Check for out of memory.

src/if_py_both.h

@@ -2922,6 +2922,13 @@ FunctionConstructor(PyTypeObject *subtype, PyObject *args, PyObject *kwargs)
 	    if (argc != 0)
 	    {
 		argv = PyMem_New(typval_T, (size_t) argc);
+		if (argv == NULL)
+		{
+		    PyErr_NoMemory();
+		    dict_unref(selfdict);
+		    list_unref(argslist);
+		    return NULL;
+		}
 		curtv = argv;
 		for (li = argslist->lv_first; li != NULL; li = li->li_next)
 		    copy_tv(&li->li_tv, curtv++);

src/version.c

@@ -748,6 +748,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1747,
 /**/
     1746,
 /**/