altoslib: Add empty constructor for AltosPyro for JSON

Signed-off-by: Keith Packard <keithp@keithp.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/altoslib/AltosPyro.java b/altoslib/AltosPyro.java
index 33d7486c..80884b9f 100644
--- a/altoslib/AltosPyro.java
+++ b/altoslib/AltosPyro.java
@@ -290,6 +290,10 @@ public class AltosPyro {
 		}
 	}
 
+	public AltosPyro() {
+		this(0);
+	}
+
 	public String toString() {
 		String	ret = String.format("%d", channel);