Subject: Add new library symbols

Index: nspr-4.12/debian/libnspr4.symbols
===================================================================
--- nspr-4.12.orig/debian/libnspr4.symbols	2016-08-08 04:09:15.000000000 +0200
+++ nspr-4.12/debian/libnspr4.symbols	2018-03-18 20:06:33.000000000 +0100
@@ -110,6 +110,7 @@
  PR_ErrorLanguages@Base 2:4.9-2~
  PR_ErrorToName@Base 2:4.9-2~
  PR_ErrorToString@Base 2:4.9-2~
+ PR_ErrorUninstallTables@Base 4.7.2
  PR_ExitMonitor@Base 2:4.9-2~
  PR_ExplodeTime@Base 2:4.9-2~
  PR_ExportFileMapAsString@Base 2:4.9-2~