build(mgb): fix linkage of libatomic

GitOrigin-RevId: c164ed28e10ac1318dbae10c9c173e0cd5b89f1f

python_module/src/swig/shared_nd_SharedND.py

@@ -3,9 +3,9 @@
 __lazy_initializer = None
 
 def __apply_lazy_initializer(self):
+    """ __lazy_initializer released by self.set_value()"""
     if self.__lazy_initializer is not None:
         self.set_value(self.__lazy_initializer.get_value())
-        # __lazy_initializer released by self.set_value()
 
 @property
 def shape(self):

src/CMakeLists.txt

@@ -156,7 +156,7 @@ if(UNIX)
     target_link_libraries(megbrain dl rt)
     find_library(libatomic atomic)
     if(NOT libatomic STREQUAL "libatomic-NOTFOUND")
-        target_link_libraries(megbrain libatomic)
+        target_link_libraries(megbrain ${libatomic})
     endif()
 endif()