--- rstudio-1.2.1335-orig/src/cpp/server_core/SecureKeyFile.cpp	2019-03-28 16:08:20.000000000 +1100
+++ rstudio-1.2.1335/src/cpp/server_core/SecureKeyFile.cpp	2019-04-09 20:47:57.943317208 +1000
@@ -68,8 +68,8 @@
          return error;
 
       // change mode it so it is only readable and writeable by this user
-      if (changeFileMode(secureKeyPath,
-                         core::system::UserReadWriteMode) < 0)
+      if (!!changeFileMode(secureKeyPath,
+                           core::system::UserReadWriteMode))
       {
          return systemError(errno, ERROR_LOCATION);
       }