Fix various format string errors, courtesy of Florian Krohm.



git-svn-id: svn://svn.valgrind.org/valgrind/trunk@6902 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/coregrind/m_libcassert.c b/coregrind/m_libcassert.c
index ddafdfb..a2b8a4c 100644
--- a/coregrind/m_libcassert.c
+++ b/coregrind/m_libcassert.c
@@ -189,7 +189,7 @@
    // Treat vg_assert2(0, "foo") specially, as a panicky abort
    if (VG_STREQ(expr, "0")) {
       VG_(printf)("\n%s: %s:%d (%s): the 'impossible' happened.\n",
-                  component, file, line, fn, expr );
+                  component, file, line, fn );
    } else {
       VG_(printf)("\n%s: %s:%d (%s): Assertion '%s' failed.\n",
                   component, file, line, fn, expr );