GH-145278: also filter mmap2 in strace_helper.filter_memory (GH-148648)

Signed-off-by: Filipe Laíns <lains@riseup.net>

Author: FFY00

Lib/test/support/strace_helper.py

@@ -74,7 +74,7 @@ def sections(self):
 def _filter_memory_call(call):
     # mmap can operate on a fd or "MAP_ANONYMOUS" which gives a block of memory.
     # Ignore "MAP_ANONYMOUS + the "MAP_ANON" alias.
-    if call.syscall == "mmap" and "MAP_ANON" in call.args[3]:
+    if call.syscall in ("mmap", "mmap2") and "MAP_ANON" in call.args[3]:
         return True
 
     if call.syscall in ("munmap", "mprotect"):