fix: add job limits for thumbnails to prevent out of memory errors (2)

pkg/config.json

@@ -1,6 +1,6 @@
 {
   "host": ":3125",
-  "thumbnailjoblimit": "5",
+  "thumbnailjoblimit": 5,
   "servedirs": {
     "leech": "/home/ontake/Dev/go/leech"
   }

thumbnail/thumbnail.go

@@ -5,6 +5,7 @@ import (
 	"image"
 	"image/color"
 	"image/png"
+	"leech/config"
 	"os"
 	"path/filepath"
 	"slices"
@@ -27,7 +28,6 @@ var thumbnailSize = 24
 
 var thumbnailCache = map[string][]byte{}
 var thumbnailCacheMutex = &sync.RWMutex{}
-var jobLimit = 5
 var memLimiterMutex = &sync.RWMutex{}
 var jobCounter = 0
 var checkAgain = make(chan bool, 5)
@@ -39,7 +39,7 @@ func IsSupportedFileType(completePath string) bool {
 
 func WaitForAvailable() {
 	memLimiterMutex.RLock()
-	for jobLimit == jobCounter {
+	for config.Config.ThumbnailJobLimit == jobCounter {
 		memLimiterMutex.RUnlock()
 		<-checkAgain
 		memLimiterMutex.RLock()