Update package.scala

Author: pjfanning

http-core/src/main/scala-2.13/org/apache/pekko/http/impl/engine/package.scala

@@ -28,6 +28,7 @@ import scala.annotation.tailrec
  */
 package object parsing {
 
+  @inline
   private[http] def escape(c: Char): String = c match {
     case '\t'                           => "\\t"
     case '\r'                           => "\\r"