remove print statements and fix a crash

deltachat-ffi/Cargo.toml

@@ -24,3 +24,4 @@ default = ["vendored", "nightly", "ringbuf"]
 vendored = ["deltachat/vendored"]
 nightly = ["deltachat/nightly"]
 ringbuf = ["deltachat/ringbuf"]
+

src/dc_configure.rs

@@ -1039,7 +1039,14 @@ pub unsafe fn dc_job_do_DC_JOB_CONFIGURE_IMAP(context: &Context, _job: *mut dc_j
             }
         }
     }
+    if imap_connected_here {
+        context.inbox.read().unwrap().disconnect(context);
+    }
+    if smtp_connected_here {
+        context.smtp.clone().lock().unwrap().disconnect();
+    }
 
+    /*
     if !success {
         // disconnect if configure did not succeed
         if imap_connected_here {
@@ -1055,6 +1062,7 @@ pub unsafe fn dc_job_do_DC_JOB_CONFIGURE_IMAP(context: &Context, _job: *mut dc_j
             0, "Keeping IMAP/SMTP connections open after successful configuration"
         );
     }
+    */
     if ongoing_allocated_here {
         dc_free_ongoing(context);
     }

src/imap.rs

@@ -719,6 +719,9 @@ impl Imap {
         }
         let entry = as_str(val1);
 
+        if entry.is_empty() {
+            return (0, 0);
+        }
         // the entry has the format `imap.mailbox.<folder>=<uidvalidity>:<lastseenuid>`
         let mut parts = entry.split(':');
         (

src/sql.rs

@@ -110,7 +110,6 @@ impl Sql {
         G: FnMut(rusqlite::MappedRows<F>) -> Result<H>,
     {
         self.with_conn(|conn| {
-            eprintln!("query_map {}", sql.as_ref());
             let mut stmt = conn.prepare(sql.as_ref())?;
             let res = stmt.query_map(params, f)?;
             g(res)
@@ -1126,7 +1125,6 @@ mod test {
         maybe_add_file(&mut files, "$BLOBDIR/world.txt");
         maybe_add_file(&mut files, "world2.txt");
 
-        println!("{:?}", files);
         assert!(unsafe {
             is_file_in_use(
                 &mut files,