Make error messages even better!

Change-Id: I72bd1eb1d526dc59833e5bc3c636171f7f9545af
diff --git a/libc/bionic/__memmove_chk.cpp b/libc/bionic/__memmove_chk.cpp
index 5f51139..b653968 100644
--- a/libc/bionic/__memmove_chk.cpp
+++ b/libc/bionic/__memmove_chk.cpp
@@ -45,7 +45,7 @@
               size_t len, size_t dest_len)
 {
     if (__predict_false(len > dest_len)) {
-        __fortify_chk_fail("memmove buffer overflow prevented",
+        __fortify_chk_fail("memmove prevented write past end of buffer",
                              BIONIC_EVENT_MEMMOVE_BUFFER_OVERFLOW);
     }