Fixes suggested by static analyzer

libuavcan/include/uavcan/transport/transfer_buffer.hpp

@@ -136,7 +136,7 @@ public:
 
     ~DynamicTransferBufferManagerEntry()
     {
-        resetImpl();
+        DynamicTransferBufferManagerEntry::resetImpl();
     }
 
     static DynamicTransferBufferManagerEntry* instantiate(IPoolAllocator& allocator, uint16_t max_size);

libuavcan/src/driver/uc_can.cpp

@@ -113,6 +113,7 @@ std::string CanFrame::toString(StringRepresentation mode) const
         }
         wpos += snprintf(wpos, epos - wpos, "\'");
     }
+    (void)wpos;
     return std::string(buf);
 }
 #endif

libuavcan/src/transport/uc_frame.cpp

@@ -220,7 +220,7 @@ std::string Frame::toString() const
             ofs += snprintf(buf + ofs, BUFLEN - ofs, " ");
         }
     }
-    ofs += snprintf(buf + ofs, BUFLEN - ofs, "]");
+    (void)snprintf(buf + ofs, BUFLEN - ofs, "]");
     return std::string(buf);
 }
 #endif