Bugfix

Author: michalsta

src/IsoSpec++/fixedEnvelopes.h

@@ -61,7 +61,7 @@ class ISOSPEC_EXPORT_SYMBOL FixedEnvelope {
         allDim(0),
         sorted_by_mass(false),
         sorted_by_prob(false),
-        total_prob(0.0),
+        total_prob(NAN),
         current_size(0),
         allDimSizeofInt(0)
         // Deliberately not initializing tmasses, tprobs, tconfs