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-rw-r--r--desire.go4
1 files changed, 3 insertions, 1 deletions
diff --git a/desire.go b/desire.go
index 1d99433..670aca6 100644
--- a/desire.go
+++ b/desire.go
@@ -17,7 +17,9 @@ func NewDesire(key crypto.PrivateKey, altnames []string) *Desire {
}
func (d *Desire) RegisterSolver(s Solver) {
- d.solver[s.Type()] = s
+ if s != nil {
+ d.solver[s.Type()] = s
+ }
}
func (d *Desire) HasSolver() bool {