fix this on karmic

cc1: warnings being treated as errors
/home/ich/build/arm/armv5t/tmp/work/i686-armv5te-sdk-oe-linux-gnueabi/gdb-cross-sdk-6.8-r2/gdb-6.8/gdb/eval.c: In function 'evaluate_subexp_standard':
/home/ich/build/arm/armv5t/tmp/work/i686-armv5te-sdk-oe-linux-gnueabi/gdb-cross-sdk-6.8-r2/gdb-6.8/gdb/eval.c:1705: error: 'subscript_array' may be used uninitialized in this function
/home/ich/build/arm/armv5t/tmp/work/i686-armv5te-sdk-oe-linux-gnueabi/gdb-cross-sdk-6.8-r2/gdb-6.8/gdb/eval.c:1644: note: 'subscript_array' was declared here



Index: gdb-6.8/gdb/eval.c
===================================================================
--- gdb-6.8.orig/gdb/eval.c	2009-08-02 03:25:20.000000000 +0200
+++ gdb-6.8/gdb/eval.c	2009-08-02 03:53:39.000000000 +0200
@@ -1656,6 +1656,8 @@
 	if (nargs != ndimensions)
 	  error (_("Wrong number of subscripts"));
 
+        memset(&subscript_array, 0, sizeof(subscript_array));
+
 	/* Now that we know we have a legal array subscript expression 
 	   let us actually find out where this element exists in the array. */