regtest: incorrect path check on py_ad reg testing

Author: andrew-platt

reg_tests/executeAerodynPyRegressionCase.py

@@ -90,7 +90,7 @@
 
 
 # create the local output directory and initialize it with input files 
-if not os.path.isdir(dst):
+if not os.path.isdir(testBuildDirectory):
     rtl.copyTree(inputsDirectory, testBuildDirectory, renameDict={'py_ad_driver.out':'py_ad_driver_ref.out'})
        # , excludeExt=['.out','.outb'])