Fixed allocation bug.

src/OpenMesh/Core/Mesh/BaseKernel.hh

@@ -648,7 +648,7 @@ protected: //------------------------------------------- synchronize properties
 
   void vprops_reserve(size_t _n) const { vprops_.reserve(_n); }
   void vprops_resize(size_t _n) const { vprops_.resize(_n); }
-  void vprops_resize_if_smaller(size_t _n) const { if (vprops_.size() < _n) vprops_.resize(_n); }
+  void vprops_resize_if_smaller(size_t _n) const { vprops_.resize_if_smaller(_n); }
   void vprops_clear() {
     vprops_.clear();
   }

src/OpenMesh/Core/Utils/PropertyContainer.hh

@@ -211,6 +211,11 @@ public:
             [_n](BaseProperty* p) { if (p) p->resize(_n); });
   }
 
+  void resize_if_smaller(size_t _n) const {
+    std::for_each(properties_.begin(), properties_.end(),
+            [_n](BaseProperty* p) { if (p && p->n_elements() < _n) p->resize(_n); });
+  }
+
   void swap(size_t _i0, size_t _i1) const {
     std::for_each(properties_.begin(), properties_.end(),
             [_i0, _i1](BaseProperty* p) { if (p) p->swap(_i0, _i1); });
@@ -224,6 +229,10 @@ public:
     std::for_each(properties_.begin(), properties_.end(), Resize(_n));
   }
 
+  void resize_if_smaller(size_t _n) const {
+    std::for_each(properties_.begin(), properties_.end(), ResizeIfSmaller(_n));
+  }
+
   void swap(size_t _i0, size_t _i1) const {
     std::for_each(properties_.begin(), properties_.end(), Swap(_i0, _i1));
   }
@@ -290,6 +299,13 @@ private:
     size_t n_;
   };
 
+  struct ResizeIfSmaller
+  {
+    ResizeIfSmaller(size_t _n) : n_(_n) {}
+    void operator()(BaseProperty* _p) const { if (_p && _p->n_elements() < n_) _p->resize(n_); }
+    size_t n_;
+  };
+
   struct ClearAll
   {
     ClearAll() {}