Add bugprone-optional-value-conversion

And fix the one case.

Change-Id: Iaaedf56b12cae38583ae82017ebea8bfe8987689
Signed-off-by: Ed Tanous <ed@tanous.net>
diff --git a/src/NVMeSensorMain.cpp b/src/NVMeSensorMain.cpp
index 5287504..81be2eb 100644
--- a/src/NVMeSensorMain.cpp
+++ b/src/NVMeSensorMain.cpp
@@ -93,7 +93,7 @@
 
     if (!std::filesystem::is_symlink(muxPath))
     {
-        return *busNumber;
+        return busNumber;
     }
 
     std::string rootName = std::filesystem::read_symlink(muxPath).filename();