Another small fix for 'spaces in IDE install path on Linux'

See #3973

Author: cmaglie

build/linux/dist/arduino

@@ -31,5 +31,5 @@ if [[ "$@" != *"--upload"* && "$@" != *"--verify"* && "$@" != *"--get-pref"* &&
 	JAVA_OPTIONS+=("-splash:$APPDIR/lib/splash.png")
 fi
 
-$JAVA "${JAVA_OPTIONS[@]}" processing.app.Base "$@"
+"$JAVA" "${JAVA_OPTIONS[@]}" processing.app.Base "$@"