FIX: spelling misstakes.

FIX: output of block number should be two digits for nicer layout
FIX: strange branching in the pyramid demod in cmddata.c,  it will now always print the unknown length message
FIX: another go at the coverity scan bug in proxmark3.c. (resource leak for cmd)

client/proxmark3.c

@@ -168,9 +168,9 @@ static void *main_loop(void *targ) {
 				// exit or quit
 				if (ret == 99) 
 					break;
+			}
 			free(cmd);
 			cmd = 0;
-			}
 		} else {
 			printf("\n");
 			break;