fix: syntax missing $

Author: SaicharanKandukuri

udroid/src/udroid.sh

@@ -608,7 +608,7 @@ login() {
         fi
 
         # [CONDITIONAL]: pulseaudio server for audio output (speaker)
-        if ! no_pulseserver; then
+        if ! $no_pulseserver; then
             pulseaudio  --start \
                         --load="module-native-protocol-tcp auth-ip-acl=127.0.0.1 auth-anonymous=1" \
                         --exit-idle-time=-1