fix: iina next button hanging (#1552)

Co-authored-by: port19 <[email protected]>

Author: Dhairya3391

ani-cli

@@ -1,6 +1,6 @@
 #!/bin/sh
 
-version_number="4.10.3"
+version_number="4.10.4"
 
 # UI
 
@@ -325,7 +325,12 @@ play_episode() {
         *iina*)
             [ -n "$subs_flag" ] && subs_flag="--mpv-${subs_flag#--}"
             [ -n "$refr_flag" ] && refr_flag="--mpv-${refr_flag#--}"
-            nohup $player_function --no-stdin --keep-running --mpv-force-media-title="${allanime_title}Episode ${ep_no}" $subs_flag $refr_flag "$episode" >/dev/null 2>&1 &
+            if pgrep -f "IINA" >/dev/null 2>&1; then
+                # omit --keep-running when an IINA instance exists to prevent hanging
+                nohup $player_function --no-stdin --mpv-force-media-title="${allanime_title}Episode ${ep_no}" $subs_flag $refr_flag "$episode" >/dev/null 2>&1 &
+            else
+                nohup $player_function --no-stdin --keep-running --mpv-force-media-title="${allanime_title}Episode ${ep_no}" $subs_flag $refr_flag "$episode" >/dev/null 2>&1 &
+            fi
             ;;
         flatpak_mpv) flatpak run io.mpv.Mpv --force-media-title="${allanime_title}Episode ${ep_no}" "$episode" $subs_flag $refr_flag >/dev/null 2>&1 & ;;
         vlc*) nohup $player_function --http-referrer="${allanime_refr}" --play-and-exit --meta-title="${allanime_title}Episode ${ep_no}" "$episode" >/dev/null 2>&1 & ;;