[Ada] Make sure output variable is always initialized

gcc/ada/

	* libgnat/s-dwalin.adb (Read_Aranges_Header): Initialize output
	parameter in case we return early.

diff --git a/gcc/ada/libgnat/s-dwalin.adb b/gcc/ada/libgnat/s-dwalin.adb
index 50662ddceff3ff1f392d5bd3989040bf57db6953..5a0a2f6bf724cb7d2cd53cc6261027f6037f0d6f 100644 (file)
--- a/gcc/ada/libgnat/s-dwalin.adb
+++ b/gcc/ada/libgnat/s-dwalin.adb
@@ -1360,6 +1360,7 @@ package body System.Dwarf_Lines is
    begin
       Success     := False;
       Info_Offset := 0;
+      Addr_Size   := 0;
 
       Read_Initial_Length (C.Aranges, Unit_Length, Is64);