allocator: properly remove memory block from memory graph

fpga/include/villas/memory.hpp

@@ -116,6 +116,8 @@ public:
 		free = [&](MemoryBlock* mem) {
 			logger->warn("no free callback defined for addr space {}, not freeing",
 			             mem->getAddrSpaceId());
+
+			removeMemoryBlock(*mem);
 		};
 	}
 

fpga/lib/common/memory.cpp

@@ -62,6 +62,8 @@ LinearAllocator::LinearAllocator(MemoryManager::AddressSpaceId memoryAddrSpaceId
 		              mem->getSize(), mem->getOffset(), mem->getAddrSpaceId());
 		logger->warn("free() not implemented");
 		logger->debug("available memory: {:#x} bytes", getAvailableMemory());
+
+		removeMemoryBlock(*mem);
 	};
 }
 
@@ -133,6 +135,8 @@ HostRam::HostRamAllocator::HostRamAllocator() :
 			logger->warn("munmap() failed for {:#x} of size {:#x}",
 			             mem->getOffset(), mem->getSize());
 		}
+
+		removeMemoryBlock(*mem);
 	};
 }