DGP - updated Rocksim export to support clusters

[debian/openrocket] / core / src / net / sf / openrocket / aerodynamics / Warning.java

diff --git a/core/src/net/sf/openrocket/aerodynamics/Warning.java b/core/src/net/sf/openrocket/aerodynamics/Warning.java
index e44541c0a6fdf9fdede3fdb62f6c240a42322f6b..52911df091269c9098df6b9eb38a6655fa2c0d39 100644 (file)
--- a/core/src/net/sf/openrocket/aerodynamics/Warning.java
+++ b/core/src/net/sf/openrocket/aerodynamics/Warning.java
@@ -35,8 +35,8 @@ public abstract class Warning {
         */
        @Override
        public boolean equals(Object o) {
-               return (o.getClass() == this.getClass());
-       }
+        return o != null && (o.getClass() == this.getClass());
+    }
        
        /**
         * A <code>hashCode</code> method compatible with the <code>equals</code> method.