Fix ResourceID validation check expression

there are three methods which have wrong expression
getFallbackDrawable()
getErrorDrawable()t
getPlaceholderDrawable()
According to the official documentation, resourceID can have a negative
value, so I modified the if statement logic to include correct validation.

Author: hyuns66

library/src/main/java/com/bumptech/glide/request/SingleRequest.java

@@ -4,6 +4,8 @@
 import android.content.res.Resources.Theme;
 import android.graphics.drawable.Drawable;
 import android.util.Log;
+
+import androidx.annotation.AnyRes;
 import androidx.annotation.DrawableRes;
 import androidx.annotation.GuardedBy;
 import androidx.annotation.NonNull;
@@ -387,7 +389,7 @@ public boolean isAnyResourceSet() {
   private Drawable getErrorDrawable() {
     if (errorDrawable == null) {
       errorDrawable = requestOptions.getErrorPlaceholder();
-      if (errorDrawable == null && requestOptions.getErrorId() > 0) {
+      if (errorDrawable == null && isValidId(requestOptions.getErrorId())) {
         errorDrawable = loadDrawable(requestOptions.getErrorId());
       }
     }
@@ -398,7 +400,7 @@ private Drawable getErrorDrawable() {
   private Drawable getPlaceholderDrawable() {
     if (placeholderDrawable == null) {
       placeholderDrawable = requestOptions.getPlaceholderDrawable();
-      if (placeholderDrawable == null && requestOptions.getPlaceholderId() > 0) {
+      if (placeholderDrawable == null && isValidId(requestOptions.getPlaceholderId())) {
         placeholderDrawable = loadDrawable(requestOptions.getPlaceholderId());
       }
     }
@@ -409,13 +411,20 @@ private Drawable getPlaceholderDrawable() {
   private Drawable getFallbackDrawable() {
     if (fallbackDrawable == null) {
       fallbackDrawable = requestOptions.getFallbackDrawable();
-      if (fallbackDrawable == null && requestOptions.getFallbackId() > 0) {
+      if (fallbackDrawable == null && isValidId(requestOptions.getFallbackId())) {
         fallbackDrawable = loadDrawable(requestOptions.getFallbackId());
       }
     }
     return fallbackDrawable;
   }
 
+  /**
+   * @see android.content.res.ResourceId.isValid
+   */
+  private static boolean isValidId(int id) {
+    return id != -1 && (id & 0xff000000) != 0 && (id & 0x00ff0000) != 0;
+  }
+
   @GuardedBy("requestLock")
   private Drawable loadDrawable(@DrawableRes int resourceId) {
     Theme theme =