Fix all Wextra warnings

src/TinyGsmClientMC60.h

@@ -161,18 +161,32 @@ public:
 
   bool init(const char* pin = NULL) {
     DBG(GF("### TinyGSM Version:"), TINYGSM_VERSION);
+
     if (!testAT()) {
       return false;
     }
+
     sendAT(GF("&FZ"));  // Factory + Reset
     waitResponse();
+
     sendAT(GF("E0"));   // Echo Off
     if (waitResponse() != 1) {
       return false;
     }
+
     DBG(GF("### Modem:"), getModemName());
-    getSimStatus();
-    return true;
+
+    int ret = getSimStatus();
+    // if the sim isn't ready and a pin has been provided, try to unlock the sim
+    if (ret != SIM_READY && pin != NULL && strlen(pin) > 0) {
+      simUnlock(pin);
+      return (getSimStatus() == SIM_READY);
+    }
+    // if the sim is ready, or it's locked but no pin has been provided, return
+    // true
+    else {
+      return (ret == SIM_READY || ret == SIM_LOCKED);
+    }
   }
 
   String getModemName() {
@@ -563,9 +577,9 @@ TINY_GSM_MODEM_GET_GPRS_IP_CONNECTED()
 protected:
 
   bool modemConnect(const char* host, uint16_t port, uint8_t mux,
-                    bool ssl = false, int timeout_s = 75)
- {
-    uint32_t timeout_ms = ((uint32_t)timeout_s)*1000;
+                   bool ssl = false, int timeout_s = 75) {
+   if (ssl) DBG("SSL not yet supported on this module!");
+   uint32_t timeout_ms = ((uint32_t)timeout_s) * 1000;
     sendAT(GF("+QIOPEN="), mux, GF("\"TCP"), GF("\",\""), host, GF("\","), port);
     int rsp = waitResponse(timeout_ms,
                            GF("CONNECT OK" GSM_NL),