ftrace: binary and not logical for continue test

Peter Zijlstra provided me with a nice brown paper bag while letting me know
that I was doing a logical AND and not a binary one, making a condition
true more often than it should be.

Luckily, a false true is handled by the calling function and no harm is
done. But this needs to be fixed regardless.
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

kernel/trace/trace.c

@@ -1655,7 +1655,7 @@ print_lat_fmt(struct trace_iterator *iter, unsigned int trace_idx, int cpu)
 	case TRACE_PRINT:
 		seq_print_ip_sym(s, field->print.ip, sym_flags);
 		trace_seq_printf(s, ": %s", field->print.buf);
-		if (field->flags && TRACE_FLAG_CONT)
+		if (field->flags & TRACE_FLAG_CONT)
 			trace_seq_print_cont(s, iter);
 		break;
 	default:
@@ -1768,7 +1768,7 @@ static int print_trace_fmt(struct trace_iterator *iter)
 	case TRACE_PRINT:
 		seq_print_ip_sym(s, field->print.ip, sym_flags);
 		trace_seq_printf(s, ": %s", field->print.buf);
-		if (field->flags && TRACE_FLAG_CONT)
+		if (field->flags & TRACE_FLAG_CONT)
 			trace_seq_print_cont(s, iter);
 		break;
 	}
@@ -1833,7 +1833,7 @@ static int print_raw_fmt(struct trace_iterator *iter)
 	case TRACE_PRINT:
 		trace_seq_printf(s, "# %lx %s",
 				 field->print.ip, field->print.buf);
-		if (field->flags && TRACE_FLAG_CONT)
+		if (field->flags & TRACE_FLAG_CONT)
 			trace_seq_print_cont(s, iter);
 		break;
 	}