Bug#12856915 VALGRIND FAILURE IN FILESORT/CREATE_SORT_INDEX

Post-push fix:
Replace fun:inline_mysql_file_write with '...' since it may be optimized away.

mysql-test/valgrind.supp

@@ -880,13 +880,16 @@
 # Note the wildcard in the (mangled) function signatures of
 # write_keys() and find_all_keys().
 # They both return ha_rows, which is platform dependent.
+#
+# The '...' wildcards are for 'fun:inline_mysql_file_write' which *may*
+# be inlined.
 {
    Bug#12856915 VALGRIND FAILURE IN FILESORT/CREATE_SORT_INDEX / one
    Memcheck:Param
    write(buf)
    obj:*/libpthread*.so
    fun:my_write
-   fun:inline_mysql_file_write
+   ...
    fun:my_b_flush_io_cache
    fun:_my_b_write
    fun:_Z*10write_keysP13st_sort_paramPPhjP11st_io_cacheS4_
@@ -900,7 +903,7 @@
    write(buf)
    obj:*/libpthread*.so
    fun:my_write
-   fun:inline_mysql_file_write
+   ...
    fun:my_b_flush_io_cache
    fun:_Z15merge_many_buffP13st_sort_paramPhP10st_buffpekPjP11st_io_cache
    fun:_Z8filesortP3THDP5TABLEP13st_sort_fieldjP10SQL_SELECTybPy
@@ -912,7 +915,7 @@
    write(buf)
    obj:*/libpthread*.so
    fun:my_write
-   fun:inline_mysql_file_write
+   ...
    fun:my_b_flush_io_cache
    fun:_Z8filesortP3THDP5TABLEP13st_sort_fieldjP10SQL_SELECTybPy
 }