Fix bug where addresses were incorrectly converted to lowercase

ports/stm32/boards/Passport/modules/actions.py

@@ -270,11 +270,8 @@ class VerifyAddressUX(UXStateMachine):
                 if address == None:
                     return
 
-                # Ensure lowercase
-                address = address.lower()
-
                 # Strip prefix if present
-                if address.startswith('bitcoin:'):
+                if address[0:8].lower() == 'bitcoin:':
                     address = address[8:]
 
                 if not is_valid_address(address):

ports/stm32/boards/Passport/modules/new_wallet.py

@@ -698,11 +698,8 @@ Generate a new receive address in {} and scan the QR code on the next page.'''.f
                             self.goto_prev()
                     continue
 
-                # Ensure lowercase
-                address = address.lower()
-
                 # Strip prefix if present
-                if address.startswith('bitcoin:'):
+                if address[0:8].lower() == 'bitcoin:':
                     address = address[8:]
 
                 if not is_valid_address(address):