Timeout cleanup

src/TinyGsmClientA6.h

@@ -610,8 +610,7 @@ public:
     streamWrite(tail...);
   }
 
-  bool streamSkipUntil(char c) {
-    const unsigned long timeout = 1000L;
+  bool streamSkipUntil(char c, const unsigned long timeout = 1000L) {
     unsigned long startMillis = millis();
     while (millis() - startMillis < timeout) {
       while (millis() - startMillis < timeout && !stream.available()) {

src/TinyGsmClientBG96.h

@@ -670,8 +670,7 @@ public:
     streamWrite(tail...);
   }
 
-  bool streamSkipUntil(char c) {
-    const unsigned long timeout = 1000L;
+  bool streamSkipUntil(char c, const unsigned long timeout = 1000L) {
     unsigned long startMillis = millis();
     while (millis() - startMillis < timeout) {
       while (millis() - startMillis < timeout && !stream.available()) {

src/TinyGsmClientESP8266.h

@@ -480,8 +480,7 @@ public:
     streamWrite(tail...);
   }
 
-  bool streamSkipUntil(char c) {
-    const unsigned long timeout = 1000L;
+  bool streamSkipUntil(char c, const unsigned long timeout = 1000L) {
     unsigned long startMillis = millis();
     while (millis() - startMillis < timeout) {
       while (millis() - startMillis < timeout && !stream.available()) {

src/TinyGsmClientM590.h

@@ -626,8 +626,7 @@ public:
     streamWrite(tail...);
   }
 
-  bool streamSkipUntil(char c) {
-    const unsigned long timeout = 1000L;
+  bool streamSkipUntil(char c, const unsigned long timeout = 1000L) {
     unsigned long startMillis = millis();
     while (millis() - startMillis < timeout) {
       while (millis() - startMillis < timeout && !stream.available()) {

src/TinyGsmClientM95.h

@@ -722,8 +722,7 @@ public:
     streamWrite(tail...);
   }
 
-  bool streamSkipUntil(char c) {
-    const unsigned long timeout = 1000L;
+  bool streamSkipUntil(char c, const unsigned long timeout = 1000L) {
     unsigned long startMillis = millis();
     while (millis() - startMillis < timeout) {
       while (millis() - startMillis < timeout && !stream.available()) {

src/TinyGsmClientMC60.h

@@ -844,8 +844,7 @@ public:
     streamWrite(tail...);
   }
 
-  bool streamSkipUntil(char c) {
-    const unsigned long timeout = 1000L;
+  bool streamSkipUntil(char c, const unsigned long timeout = 1000L) {
     unsigned long startMillis = millis();
     while (millis() - startMillis < timeout) {
       while (millis() - startMillis < timeout && !stream.available()) {

src/TinyGsmClientUBLOX.h

@@ -687,8 +687,7 @@ public:
     streamWrite(tail...);
   }
 
-  bool streamSkipUntil(char c) {
-    const unsigned long timeout = 1000L;
+  bool streamSkipUntil(char c, const unsigned long timeout = 1000L) {
     unsigned long startMillis = millis();
     while (millis() - startMillis < timeout) {
       while (millis() - startMillis < timeout && !stream.available()) {