Fix one more use of inverse instead of inv.

Lib/linalg/tests/test_basic.py

@@ -230,7 +230,7 @@ def check_random_complex(self):
 
     def bench_random(self,level=5):
         import numpy.linalg as linalg
-        basic_inv = linalg.inverse
+        basic_inv = linalg.inv
         print
         print '           Finding matrix inverse'
         print '      =================================='