'Avoid confusing "read prevented write" log messages' 2.

This time it's assembler.

Change-Id: Iae6369833b8046b8eda70238bb4ed0cae64269ea
diff --git a/libc/arch-arm/cortex-a15/bionic/memset.S b/libc/arch-arm/cortex-a15/bionic/memset.S
index 8775ee8..701310c 100644
--- a/libc/arch-arm/cortex-a15/bionic/memset.S
+++ b/libc/arch-arm/cortex-a15/bionic/memset.S
@@ -197,4 +197,4 @@
 
         .data
 error_string:
-        .string     "memset prevented write past end of buffer"
+        .string     "memset: prevented write past end of buffer"