rename close to flush_out and only use explicitly use if needed inside contextmanager scope

shared/auth.py

@@ -824,7 +824,7 @@ class ApproveTransaction(UserAuthorizedAction):
                 else:
                     self.psbt.serialize(fd)
 
-                fd.close()
+                #fd.flush_out() not needed - flush is part of __exit__
                 self.result = (fd.tell(), fd.checksum.digest())
 
             self.done(redraw=(not txid))
@@ -1185,7 +1185,7 @@ async def sign_psbt_file(filename, force_vdisk=False, slot_b=None):
                             with SFFile(TXN_OUTPUT_OFFSET, max_size=MAX_TXN_LEN, message="Saving...") as fd0:
                                 await fd0.erase()
                                 txid = psbt.finalize(fd0)
-                                fd0.close()
+                                fd0.flush_out()  # need to flush here as we are probably not gona call .read( again
                                 tx_len, tx_sha = fd0.tell(), fd0.checksum.digest()
                                 if txid and await try_push_tx(tx_len, txid, tx_sha):
                                     return  # success, exit

shared/nfc.py

@@ -587,7 +587,7 @@ class NFCHandler:
             else:
                 psbt.serialize(fd)
 
-            fd.close()
+            # fd.flush_out()  not needed - flush is part of __exit__
             self.result = (fd.tell(), fd.checksum.digest())
 
         out_len, out_sha = self.result

shared/sffile.py

@@ -81,7 +81,7 @@ class SFFile:
         return self
 
     def __exit__(self, exc_type, exc_val, exc_tb):
-        self.close()
+        self.flush_out()
 
         if self.message:
             from glob import dis
@@ -89,7 +89,7 @@ class SFFile:
 
         return False
 
-    def close(self):
+    def flush_out(self):
         # PSRAM might leave a little behind
         if self.runt:
             # write final runt, might be up to 3 bytes (padding w/ zeros)

shared/ux_q1.py

@@ -975,9 +975,9 @@ async def qr_psbt_sign(decoder, psbt_len, raw):
                     txid = psbt.finalize(fd)
                 else:
                     psbt.serialize(fd)
-            psram.close()
-            data_len = psram.tell()
-            sha = fd.checksum.digest()
+
+            #psram.flush_out() not needed - flush is part of __exit__
+            data_len, sha = psram.tell(), fd.checksum.digest()
 
         UserAuthorizedAction.cleanup()