util/nvmutil: don't display errant whitespace

At the end of each line is an errant space.

Fix that.

util/nvmutil/nvmutil.c

@@ -269,10 +269,10 @@ void
 hexdump(int partnum)
 {
 	for (int row = 0; row < 8; row++) {
-		printf("%07x ", row << 4);
+		printf("%07x", row << 4);
 		for (int c = 0; c < 8; c++) {
 			uint16_t val16 = word((row << 3) + c, partnum);
-			printf("%02x%02x ", val16 >> 8, val16 & 0xff);
+			printf(" %02x%02x", val16 >> 8, val16 & 0xff);
 		}
 		printf("\n");
 	}