Fix memory leaks (#1378)

* Fix memory leaks

Fixed memory leaks in: buffers, basic, and vectors

* Formatting fixes

Co-authored-by: oramirez <oramirez@qti.qualcomm.com>

test_conformance/vectors/test_step.cpp

@@ -172,6 +172,8 @@ int test_step_internal(cl_device_id deviceID, cl_context context,
                 destroyClState(pClState);
                 return -1;
             }
+
+            clStateDestroyProgramAndKernel(pClState);
         }
     }