diff -r 9046db64ca39 -r cddef3bde924 src/hotspot/os/linux/perfMemory_linux.cpp
--- a/src/hotspot/os/linux/perfMemory_linux.cpp	Wed Sep 11 14:16:27 2019 +0200
+++ b/src/hotspot/os/linux/perfMemory_linux.cpp	Wed Sep 11 14:16:30 2019 +0200
@@ -629,7 +629,7 @@
           if (statbuf.st_ctime > oldest_ctime) {
             char* user = strchr(dentry->d_name, '_') + 1;
 
-            if (oldest_user != NULL) FREE_C_HEAP_ARRAY(char, oldest_user);
+            FREE_C_HEAP_ARRAY(char, oldest_user);
             oldest_user = NEW_C_HEAP_ARRAY(char, strlen(user)+1, mtInternal);
 
             strcpy(oldest_user, user);