THRIFT-4984: Ignore EOF error in TSimpleServer ReadFrame call

EOF isn't an error that should be bubbled up to the 
caller and we are already ignoring other EOF errors in 
TSimpleServer.processRequest [0].

Client: go

This closes #1904.

[0]: https://github.com/apache/thrift/blob/cecee50308fc7e6f77f55b3fd906c1c6c471fa2f/lib/go/thrift/simple_server.go#L265-L266
diff --git a/lib/go/thrift/simple_server.go b/lib/go/thrift/simple_server.go
index f8efbed..c1ab957 100644
--- a/lib/go/thrift/simple_server.go
+++ b/lib/go/thrift/simple_server.go
@@ -20,6 +20,7 @@
 package thrift
 
 import (
+	"io"
 	"log"
 	"runtime/debug"
 	"sync"
@@ -231,7 +232,7 @@
 
 	defer func() {
 		if e := recover(); e != nil {
-			log.Printf("panic in processor: %s: %s", e, debug.Stack())
+			log.Printf("panic in processor: %v: %s", e, debug.Stack())
 		}
 	}()
 
@@ -255,9 +256,12 @@
 			// won't break when it's called again later when we
 			// actually start to read the message.
 			if err := headerProtocol.ReadFrame(); err != nil {
+				if err == io.EOF {
+					return nil
+				}
 				return err
 			}
-			ctx = AddReadTHeaderToContext(defaultCtx, headerProtocol.GetReadHeaders())
+			ctx = AddReadTHeaderToContext(ctx, headerProtocol.GetReadHeaders())
 			ctx = SetWriteHeaderList(ctx, p.forwardHeaders)
 		}