libxl/arm: Fix ARM build.

Initialise *size in default branch to prevent certain compilers (i.e.
Linaro GCC 5.2-2015.11-2) from reporting "variable may be used uninitialized"
errors in caller function.

Signed-off-by: Julien Grall <julien.grall@arm.com>
Acked-by: Wei Liu <wei.liu2@citrix.com>
Release-acked-by: Julien Grall <julien.grall@arm.com>

diff --git a/tools/libxl/libxl_arm_acpi.c b/tools/libxl/libxl_arm_acpi.c
index db113dbf85efc7aee714cdec597e79ea6312b760..a6456be662057d5803119e63a577bf876f0f9d04 100644 (file)
--- a/tools/libxl/libxl_arm_acpi.c
+++ b/tools/libxl/libxl_arm_acpi.c
@@ -87,6 +87,7 @@ static int libxl__estimate_madt_size(libxl__gc *gc,
         break;
     default:
         LOG(ERROR, "Unknown GIC version");
+        *size = 0;
         rc = ERROR_FAIL;
         break;
     }