RFR: 8323803: ConstantOopReadValue::print_on should print 'null' instead of 'nullptr'

[theoweidmannoracle]

Printing incorrectly printed `nullptr` instead of `null`

Buggy:


ScopeDesc(pc=0x0000000104c05468 offset=2e8):
   java.lang.Class::desiredAssertionStatus at 20 (line 3984)
   Locals
    - l0: reg rfp [58],oop
    - l1: stack[0],oop
    - l2: nullptr
    - l3: empty
   Expression stack
    - @0: nullptr


Fixed:


ScopeDesc(pc=0x0000000106fdd468 offset=2e8):
   java.lang.Class::desiredAssertionStatus at 20 (line 3984)
   Locals
    - l0: reg rfp [58],oop
    - l1: stack[0],oop
    - l2: null
    - l3: empty
   Expression stack
    - @0: null

-------------

Commit messages:
 - 8323803: ConstantOopReadValue::print_on should print 'null' instead of 'nullptr'

Changes: https://git.openjdk.org/jdk/pull/21869/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=21869&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8323803
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/21869.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/21869/head:pull/21869

PR: https://git.openjdk.org/jdk/pull/21869