8154179: BasicImageReader activating ImageBufferCache when not used

Reviewed-by: redestad

jdk/src/java.base/share/classes/jdk/internal/jimage/BasicImageReader.java

@@ -183,8 +183,10 @@ public class BasicImageReader implements AutoCloseable {
     }
 
     public static void releaseByteBuffer(ByteBuffer buffer) {
+        if (!MAP_ALL) {
             ImageBufferCache.releaseBuffer(buffer);
         }
+    }
 
     public String getName() {
         return name;