Fix another Promise (not caught because of missing type)

src/matrixeventprocessor.ts

@@ -495,7 +495,7 @@ export class MatrixEventProcessor {
         displayname: string,
         avatar_url: string|undefined }) {
         let displayName = sender;
-        let avatarUrl;
+        let avatarUrl: string | undefined = undefined;
 
         // Are they a discord user.
         if (this.bridge.isNamespacedUser(sender)) {
@@ -517,22 +517,21 @@ export class MatrixEventProcessor {
             // Let it fall through.
         }
 
-        if (profile) {
-            if (profile.displayname &&
-                profile.displayname.length >= MIN_NAME_LENGTH &&
-                profile.displayname.length <= MAX_NAME_LENGTH) {
-                displayName = profile.displayname;
-            }
+        if (profile?.displayname &&
+            profile.displayname.length >= MIN_NAME_LENGTH &&
+            profile.displayname.length <= MAX_NAME_LENGTH) {
+            displayName = profile.displayname;
+        }
 
-            if (profile.avatar_url) {
-                avatarUrl = this.bridge.botClient.mxcToHttpThumbnail(
-                    profile.avatar_url,
-                    DISCORD_AVATAR_WIDTH,
-                    DISCORD_AVATAR_HEIGHT,
-                    "scale",
-                );
-            }
+        if (profile?.avatar_url) {
+            avatarUrl = await this.bridge.botClient.mxcToHttpThumbnail(
+                profile.avatar_url,
+                DISCORD_AVATAR_WIDTH,
+                DISCORD_AVATAR_HEIGHT,
+                "scale",
+            );
         }
+
         embed.setAuthor(
             displayName.substring(0, MAX_NAME_LENGTH),
             avatarUrl,