Keep "astyled" elements in MarlinSerial.*

Marlin/MarlinSerial.cpp

@@ -102,7 +102,8 @@ void MarlinSerial::end() {
 int MarlinSerial::peek(void) {
   if (rx_buffer.head == rx_buffer.tail) {
     return -1;
-  } else {
+  }
+  else {
     return rx_buffer.buffer[rx_buffer.tail];
   }
 }
@@ -162,7 +163,8 @@ void MarlinSerial::print(long n, int base) {
       n = -n;
     }
     printNumber(n, 10);
-  } else {
+  }
+  else {
     printNumber(n, base);
   }
 }

Marlin/MarlinSerial.h

@@ -99,7 +99,6 @@ class MarlinSerial { //: public Stream
     FORCE_INLINE void write(uint8_t c) {
       while (!TEST(M_UCSRxA, M_UDREx))
         ;
-
       M_UDRx = c;
     }