target-ppc: Fix use of uninitialized TCG variable in tlbiva

Silences a warning about possible unitialized use of t0.

Signed-off-by: Andreas Faerber <andreas.faerber@web.de>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5915 c046a42c-6fe2-441c-8c8c-71466251a162

target-ppc/translate.c

diff --git a/target-ppc/translate.c b/target-ppc/translate.c
index 31d7387..2f1b5ff 100644
--- a/target-ppc/translate.c
+++ b/target-ppc/translate.c
@@ -5386,6 +5386,7 @@
         GEN_EXCP_PRIVOPC(ctx);
         return;
     }
+    t0 = tcg_temp_new();
     gen_addr_reg_index(t0, ctx);
 #if defined(TARGET_PPC64)
     if (!ctx->sf_mode)