patch 8.2.3048: strange error for white space after ++ command

Problem:    Strange error for white space after ++ command.
Solution:   Check for white space explicitly. (closes #8440)
diff --git a/src/errors.h b/src/errors.h
index 8a2461b..b4cf8ae 100644
--- a/src/errors.h
+++ b/src/errors.h
@@ -446,3 +446,5 @@
 	INIT(= N_("E1200: Decryption failed!"));
 EXTERN char e_libsodium_decryption_failed_premature[]
 	INIT(= N_("E1201: Decryption failed: pre-mature end of file!"));
+EXTERN char e_no_white_space_allowed_after_str_str[]
+	INIT(= N_("E1202: No white space allowed after '%s': %s"));