[OMCSession*] fix variable type to float

Author: syntron

OMPython/OMCSession.py

@@ -923,7 +923,7 @@ def _timeout_loop(
         if timeout <= 0:
             raise OMCSessionException(f"Invalid timeout: {timeout}")
 
-        timer = 0
+        timer = 0.0
         yield True
         while True:
             timer += timestep