IDE: don't spam the strerr with unconditional debug when the ASCII window is open (introduced in r26288)

git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@28632 3ad0048d-3df7-0310-abae-a5850022a9f2
* use HexStr instead of casting to PtrUInt for logging pointers, when
  DEBUG_TINY_HEAP is defined, because HexStr produces nicer results for far
  pointers



git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@28633 3ad0048d-3df7-0310-abae-a5850022a9f2