11972 resync smatch

@@ -101,13 +101,12 @@
 $(OBJS_DIR)/metaslab.o := SMOFF += no_if_block
 $(OBJS_DIR)/zfs_vnops.o := SMOFF += signed
 # needs work
 $(OBJS_DIR)/zvol.o := SMOFF += deref_check,signed
 
-# false positives
+# false positive
 $(OBJS_DIR)/zfs_ctldir.o := SMOFF += strcpy_overflow
-$(OBJS_DIR)/zfs_ioctl.o := SMOFF += strcpy_overflow
 
 #
 #       Default build targets.
 #
 .KEEP_STATE: