Correct some warnings

Author: sandeepmistry

HttpClient.cpp

@@ -252,7 +252,7 @@ int HttpClient::responseStatusCode()
     // Where HTTP-Version is of the form:
     //   HTTP-Version   = "HTTP" "/" 1*DIGIT "." 1*DIGIT
 
-    char c = '\0';
+    int c = '\0';
     do
     {
         // Make sure the status code is reset, and likewise the state.  This
@@ -311,6 +311,9 @@ int HttpClient::responseStatusCode()
                     case eStatusCodeRead:
                         // We're just waiting for the end of the line now
                         break;
+
+                    default:
+                        break;
                     };
                     // We read something, reset the timeout counter
                     timeoutStart = millis();

b64.cpp

@@ -66,5 +66,7 @@ int b64_encode(const unsigned char* aInput, int aInputLen, unsigned char* aOutpu
             b64_encode(&aInput[i*3], aInputLen % 3, &aOutput[i*4], aOutputLen - (i*4));
         }
     }
+
+    return ((aInputLen+2)/3)*4;
 }