Add required space to [[ -n "$1" ]] (previously [[ -n"$1" ]])

practicalswift · practicalswift · commit 564a172dfdce · 2017-10-18T17:09:36.000+02:00
diff --git a/contrib/gitian-build.sh b/contrib/gitian-build.sh
@@ -188,7 +188,7 @@ then
 fi
 
 # Get signer
-if [[ -n"$1" ]]
+if [[ -n "$1" ]]
 then
     SIGNER=$1
     shift
