nvme: fix indentation, unreachable pattern warning and typos

Author: valopok

src/drivers/nvme.rs

@@ -305,7 +305,7 @@ impl vroom::Allocator for NvmeAllocator {
 				"NVMe driver: The given virtual address could not be mapped to a physical one."
 					.into(),
 			);
-        };
+		};
 		Ok(physical_address.as_usize() as *mut T)
 	}
 }

src/drivers/pci.rs

@@ -414,7 +414,8 @@ impl PciDriver {
 				fn nvme_handler() {}
 				(irq_number, nvme_handler)
 			}
-            _ => todo!(),
+			#[allow(unreachable_patterns)]
+			_ => todo!(),
 		}
 	}
 }