Committed as obvious, fixing three more darwin-specific failures in analyzer testsuite.
This fixes:

    FAIL: gcc.dg/plugin/taint-CVE-2011-0521-5.c -fplugin=./analyzer_kernel_plugin.so  (test for warnings, line 39)
    FAIL: gcc.dg/plugin/taint-CVE-2011-0521-6.c -fplugin=./analyzer_kernel_plugin.so  (test for warnings, line 36)
    XPASS: gcc.dg/plugin/taint-CVE-2011-0521-5-fixed.c -fplugin=./analyzer_kernel_plugin.so  (test for bogus messages, line 39)

Committed to trunk,
FX