Fix GSMLocationTime, XBee, A6

Signed-off-by: Sara Damiano <sdamiano@stroudcenter.org>

src/TinyGsmClientA6.h

@@ -65,11 +65,11 @@ class TinyGsmA6 : public TinyGsmModem<TinyGsmA6>,
    public:
     GsmClientA6() {}
 
-    explicit GsmClientA6(TinyGsmA6& modem) {
+    explicit GsmClientA6(TinyGsmA6& modem, uint8_t = 0) {
       init(&modem, -1);
     }
 
-    bool init(TinyGsmA6* modem, uint8_t) {
+    bool init(TinyGsmA6* modem, uint8_t = 0) {
       this->at       = modem;
       this->mux      = -1;
       sock_connected = false;

src/TinyGsmClientXBee.h

@@ -97,7 +97,7 @@ class TinyGsmXBee : public TinyGsmModem<TinyGsmXBee>,
       init(&modem, mux);
     }
 
-    bool init(TinyGsmXBee* modem, uint8_t) {
+    bool init(TinyGsmXBee* modem, uint8_t = 0) {
       this->at       = modem;
       this->mux      = 0;
       sock_connected = false;

src/TinyGsmGSMLocation.tpp

@@ -36,8 +36,8 @@ class TinyGsmGSMLocation {
 
   bool getGsmLocationTime(int* year, int* month, int* day, int* hour,
                           int* minute, int* second) {
-    float lat = 0;
-    float lon = 0;
+    float lat      = 0;
+    float lon      = 0;
     float accuracy = 0;
     return thisModem().getGsmLocation(&lat, &lon, &accuracy, year, month, day,
                                       hour, minute, second);

tools/test_build/test_build.ino

@@ -91,6 +91,8 @@ void loop() {
   client.stop();
 
 #if defined(TINY_GSM_MODEM_HAS_SSL)
+  // modem.addCertificate();  // not yet impemented
+  // modem.deleteCertificate();  // not yet impemented
   TinyGsmClientSecure client_secure(modem);
   TinyGsmClientSecure client_secure2(modem);
   TinyGsmClientSecure client_secure3(modem, 1);