ARM: thinko in disassembly

[Andrew Haley]

If you set T2EE_PRINT_DISASS in the environment and run java
you may get a segfault if hsdis-arm.so isn't found.
The fix is obvious/trivial, not release critical, but I'll
commit it to the branch too because it's very low risk.

Andrew.



2012-01-27  Andrew Haley  <aph at redhat.com>

	* arm_port/hotspot/src/cpu/zero/vm/thumb2.cpp (class Hsdis): Set
	decode_instructions = NULL.

diff -r 80c34531aba3 arm_port/hotspot/src/cpu/zero/vm/thumb2.cpp
--- a/arm_port/hotspot/src/cpu/zero/vm/thumb2.cpp	Thu Jan 26 07:27:15 2012 -0500
+++ b/arm_port/hotspot/src/cpu/zero/vm/thumb2.cpp	Fri Jan 27 13:30:16 2012 +0000
@@ -736,6 +736,8 @@
   // Load hsdis-arm.so lazily.
   Hsdis()
   {
+    decode_instructions = NULL;
+
     if (PrintAssembly) {
       if (lib = dlopen("hsdis-arm.so", RTLD_NOW)) {
 	decode_instructions