Fixed engines.precache classes not unregistering on script unload.

Author: satoon101

addons/source-python/packages/source-python/engines/precache.py

@@ -8,6 +8,9 @@
 # Python Imports
 #   Contextlib
 from contextlib import suppress
+#   Inspect
+from inspect import getmodule
+from inspect import stack
 
 # Site-Package Imports
 #   Path
@@ -56,6 +59,12 @@ def __init__(self, path, download=False):
         # Call Path's __init__ with the given path
         super(_PrecacheBase, self).__init__(path)
 
+        # Get the calling module
+        caller = getmodule(stack()[1][0])
+
+        # Set the _calling_module attribute for the instance
+        self._calling_module = caller.__name__
+
         # Precache the instance
         self._precache_method(self)