Work around some (usually helpful) Firefox behaviour when creating multiple secrets.

index.html

@@ -113,7 +113,7 @@
                 <button
                     class="btn"
                     style="background: #444"
-                    onclick="location.reload()"
+                    onclick="reload()"
                 >
                     Create Another
                 </button>
@@ -164,6 +164,13 @@
                 if (window.location.hash.includes("id=")) initDecryption();
             };
 
+            // This is a workaround for Firefox trying to be helpful. Most
+            // browsers clear content on reload, but Firefox does not.
+            async function reload() {
+                document.getElementById("text").value = "";
+                window.location.reload();
+            }
+
             async function burnIt() {
                 const text = document.getElementById("text").value;
                 if (!text) return;