Abort update if http.begin() returns false. Fix a typo in httpUpdate.ino (#2156)

libraries/HTTPUpdate/examples/httpUpdate/httpUpdate.ino

@@ -56,7 +56,7 @@ void loop() {
 
     switch (ret) {
       case HTTP_UPDATE_FAILED:
-        Serial.printf("HTTP_UPDATE_FAILD Error (%d): %s\n", httpUpdate.getLastError(), httpUpdate.getLastErrorString().c_str());
+        Serial.printf("HTTP_UPDATE_FAILED Error (%d): %s\n", httpUpdate.getLastError(), httpUpdate.getLastErrorString().c_str());
         break;
 
       case HTTP_UPDATE_NO_UPDATES:

libraries/HTTPUpdate/src/HTTPUpdate.cpp

@@ -49,14 +49,20 @@ HTTPUpdate::~HTTPUpdate(void)
 HTTPUpdateResult HTTPUpdate::update(WiFiClient& client, const String& url, const String& currentVersion)
 {
     HTTPClient http;
-    http.begin(client, url);
+    if(!http.begin(client, url))
+    {
+        return HTTP_UPDATE_FAILED;
+    }
     return handleUpdate(http, currentVersion, false);
 }
 
 HTTPUpdateResult HTTPUpdate::updateSpiffs(WiFiClient& client, const String& url, const String& currentVersion)
 {
     HTTPClient http;
-    http.begin(client, url);
+    if(!http.begin(client, url))
+    {
+        return HTTP_UPDATE_FAILED;
+    }
     return handleUpdate(http, currentVersion, true);
 }
 
@@ -64,7 +70,10 @@ HTTPUpdateResult HTTPUpdate::update(WiFiClient& client, const String& host, uint
         const String& currentVersion)
 {
     HTTPClient http;
-    http.begin(client, host, port, uri);
+    if(!http.begin(client, host, port, uri))
+    {
+        return HTTP_UPDATE_FAILED;
+    }
     return handleUpdate(http, currentVersion, false);
 }