cid#562978 silence Out-of-bounds access

coverity only takes the tag when it sits on the line directly above the
statement, and the rest of the tree spells out the FALSE classification

Signed-off-by: Caolán McNamara <caolan.mcnamara@collabora.com>
Change-Id: I2cb97c3314a7b612b8fe5bbe2270c7436d1d0717
Reviewed-on: https://gerrit.collaboraoffice.com/c/online/+/10507
Tested-by: Jenkins CPCI <releng@collaboraoffice.com>
Reviewed-by: Noel Grandin <noel.grandin@collabora.com>
(cherry picked from commit 260f71263c7a37290d50a182ab1e8616a4b99de3)
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/210288
Tested-by: Jenkins
Reviewed-by: Xisco Fauli <xiscofauli@libreoffice.org>

sal/osl/unx/security.cxx

@@ -103,8 +103,7 @@ static oslSecurityImpl * growSecurityImpl(
         }
         p = static_cast<oslSecurityImpl *>(realloc(impl, n));
         if (p != nullptr) {
-            // coverity[overrun-buffer-arg] - theoretically massive n is not due to
-            // a negative parameter being interpreted as unsigned
+            // coverity[overrun-buffer-arg : FALSE] - n is the size just passed to realloc
             memset (p, 0, n);
         }
     }