MDEV-28974 fixup: Fix error and warning messages

fil_name_process(): Starting with
commit 212994f7
the name is not guaranteed to be NUL terminated.

storage/innobase/log/log0recv.cc

@@ -1307,7 +1307,8 @@ static void fil_name_process(const char *name, ulint len, uint32_t space_id,
 			} else {
 				ib::error() << "Tablespace " << space_id
 					<< " has been found in two places: '"
-					<< f.name << "' and '" << name << "'."
+					<< f.name << "' and '"
+					<< fname.name << "'."
 					" You must delete one of them.";
 				recv_sys.set_corrupt_fs();
 			}
@@ -1333,7 +1334,8 @@ static void fil_name_process(const char *name, ulint len, uint32_t space_id,
 
 				ib::info()
 					<< "At LSN: " << recv_sys.recovered_lsn
-					<< ": unable to open file " << name
+					<< ": unable to open file "
+					<< fname.name
 					<< " for tablespace " << space_id;
 			}
 			break;
@@ -1350,8 +1352,9 @@ static void fil_name_process(const char *name, ulint len, uint32_t space_id,
 			ut_ad(space == NULL);
 			if (srv_force_recovery == 0) {
 				sql_print_error("InnoDB: Recovery cannot access"
-						" file %s (tablespace "
-						UINT32PF ")", name, space_id);
+						" file %.*s (tablespace "
+						UINT32PF ")", int(len), name,
+						space_id);
 				sql_print_information("InnoDB: You may set "
 						      "innodb_force_recovery=1"
 						      " to ignore this and"
@@ -1362,9 +1365,10 @@ static void fil_name_process(const char *name, ulint len, uint32_t space_id,
 			}
 
 			sql_print_warning("InnoDB: Ignoring changes to"
-					  " file %s (tablespace " UINT32PF ")"
+					  " file %.*s (tablespace "
+					  UINT32PF ")"
 					  " due to innodb_force_recovery",
-					  name, space_id);
+					  int(len), name, space_id);
 		}
 	}
 }