[OE-core] [PATCH] runqemu-internal: Fixes unary operator expected in new TCPSERIAL_PORTNUM

[Aníbal Limón]

If $TCPSERIAL_PORTNUM is empty string causes an error because
expands the expresion to,

$TCPSERIAL_PORTNUM == "" -> == ""

Signed-off-by: Aníbal Limón <anibal.limon at linux.intel.com>
---
 scripts/runqemu-internal | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/runqemu-internal b/scripts/runqemu-internal
index b317358..1b1bc9e 100755
--- a/scripts/runqemu-internal
+++ b/scripts/runqemu-internal
@@ -620,7 +620,7 @@ if [ "x$QEMUOPTIONS" = "x" ]; then
     return 1
 fi
 
-if [ $TCPSERIAL_PORTNUM != "" ]; then
+if [ "$TCPSERIAL_PORTNUM" != "" ]; then
     if [ "$MACHINE" = "qemuarm64" ]; then
         QEMUOPTIONS="$QEMUOPTIONS -device virtio-serial-device -chardev socket,id=virtcon,port=$TCPSERIAL_PORTNUM,host=127.0.0.1 -device virtconsole,chardev=virtcon"
     else
-- 
1.9.1