5G-S-TMSI encoding fix in Initial UE Message

src/utils/common_types.cpp

@@ -38,7 +38,7 @@ int64_t GutiMobileIdentity::toTmsiValue() const
 GutiMobileIdentity GutiMobileIdentity::FromSTmsi(int64_t sTmsi)
 {
     GutiMobileIdentity res;
-    res.tmsi = octet4{static_cast<uint32_t>(sTmsi & 0xFFFFFFLL)};
+    res.tmsi = octet4{static_cast<uint32_t>(sTmsi & 0xFFFFFFFFLL)};
     res.amfPointer = static_cast<int>(((sTmsi >> 32LL) & 0b111111LL));
     res.amfSetId = static_cast<int>(((sTmsi >> 38LL) & 0b1111111111LL));
     return res;