Fix bug in error handling while loading more apps

app/src/main/java/io/eelo/appinstaller/categories/category/CategoryActivity.kt

@@ -106,10 +106,10 @@ class CategoryActivity : AppCompatActivity(), ApplicationManagerServiceConnectio
                 errorContainer.visibility = View.VISIBLE
                 progressBar.visibility = View.GONE
                 loadMoreContainer.visibility = View.GONE
-                isLoadingMoreApplications = false
             } else {
                 errorContainer.visibility = View.GONE
             }
+            isLoadingMoreApplications = false
         })
 
         applicationManagerServiceConnection.bindService(this)

app/src/main/java/io/eelo/appinstaller/categories/category/model/CategoryModel.kt

@@ -42,6 +42,8 @@ class CategoryModel : CategoryModelInterface {
                 } else {
                     if (page == 1) {
                         screenError.value = error
+                    } else {
+                        screenError.value = null
                     }
                 }
             })
@@ -49,6 +51,8 @@ class CategoryModel : CategoryModelInterface {
         } else {
             if (page == 1) {
                 screenError.value = Error.NO_INTERNET
+            } else {
+                screenError.value = null
             }
         }
     }