Use image size for relative sizes

app/src/main/java/eu/faircode/email/HtmlHelper.java

@@ -49,7 +49,6 @@ import android.text.style.TypefaceSpan;
 import android.text.style.URLSpan;
 import android.text.style.UnderlineSpan;
 import android.util.Base64;
-import android.util.DisplayMetrics;
 import android.util.Patterns;
 
 import androidx.annotation.NonNull;
@@ -993,7 +992,6 @@ public class HtmlHelper {
 
         // Images
         // https://developer.mozilla.org/en-US/docs/Web/HTML/Element/img
-        DisplayMetrics dm = context.getResources().getDisplayMetrics();
         for (Element img : document.select("img")) {
             String alt = img.attr("alt");
             String src = img.attr("src");
@@ -1043,23 +1041,25 @@ public class HtmlHelper {
                 int width = 0;
                 int height = 0;
 
+                // Relative sizes (%) = use image size
+
                 String awidth = img.attr("width").replace(" ", "");
                 for (int i = 0; i < awidth.length(); i++)
                     if (Character.isDigit(awidth.charAt(i)))
                         width = width * 10 + (byte) awidth.charAt(i) - (byte) '0';
-                    else
+                    else {
+                        width = 0;
                         break;
-                if (awidth.endsWith("%"))
-                    width = Math.round(dm.widthPixels / dm.density * width / 100);
+                    }
 
                 String aheight = img.attr("height").replace(" ", "");
                 for (int i = 0; i < aheight.length(); i++)
                     if (Character.isDigit(aheight.charAt(i)))
                         height = height * 10 + (byte) aheight.charAt(i) - (byte) '0';
-                    else
+                    else {
+                        height = 0;
                         break;
-                if (aheight.endsWith("%"))
-                    height = Math.round(dm.heightPixels / dm.density * height / 100);
+                    }
 
                 if (width != 0 || height != 0) {
                     ImageHelper.AnnotatedSource a = new ImageHelper.AnnotatedSource(