Add return values to the other return statements present in do_tests

Author: Real-Septicake

tests/test.py

@@ -332,11 +332,11 @@ def do_tests():
 
     if (len(binaries) == 0):
         print("No binaries to test")
-        return
+        return 1
 
     if (len(expected) == 0):
         print("No expecteds to test against")
-        return
+        return 1
 
     instances = []