`OdbGraph` shows confusing log message about node initialization

[ursachec]

OdbGraph should show a No nodes to initialize from current storage message instead of initializing 0 nodes from existing storage - this may take some time

overflowdb/tinkerpop3/src/main/java/io/shiftleft/overflowdb/OdbGraph.java

Lines 120 to 121 in 76faf72

	final Set<Map.Entry<Long, byte[]>> serializedNodes = storage.allNodes();
	logger.info("initializing " + serializedNodes.size() + " nodes from existing storage - this may take some time");

Stumbled upon this small discrepancy while trying out Ocular.

ocular> workspace.openProject("HELLO_SHIFTLEFT") 
Loading base CPG from: /home/ursachec/.shiftleft/ocular/workspace/HELLO_SHIFTLEFT/cpg.bin
Overlays: 
2020-04-03 18:39:16.602 [HeapUsageMonitor] INFO installed GC monitors. will clear references if heap (after GC) is larger than 80%
2020-04-03 18:39:16.606 [OdbGraph] INFO initializing 0 nodes from existing storage - this may take some time
2020-04-03 18:39:16.607 [OdbGraph] INFO initialized odbgraph[nodes: 0] from existing storage in 4ms
res12: Option[workspacehandling.Project] = Some(
  Project(
    ProjectFile(
      "/home/ursachec/code/HelloShiftLeft/target/hello-shiftleft-0.0.1.jar",
      "HELLO_SHIFTLEFT"
    ),
    /home/ursachec/.shiftleft/ocular/workspace/HELLO_SHIFTLEFT,
    Some(io.shiftleft.codepropertygraph.Cpg@cd809c6f),
    List()
  )
)