compile regex only once in filte inside regex condition

internal/config/v1.go

@@ -111,8 +111,8 @@ func (z *ZurgConfigV1) matchFilter(fileID, torrentName string, fileNames []strin
 		}
 	}
 	if filter.FileInsideRegexStr != "" {
+		regex := compilePattern(filter.FileInsideRegexStr)
 		for _, filename := range fileNames {
-			regex := compilePattern(filter.FileInsideRegexStr)
 			if regex.MatchString(filename) {
 				return true
 			}