[llvm] [NFC,SHT_LLVM_BB_ADDR_MAP] Fix ub in ELF.cpp. (PR #115830)

[Rahman Lavaee via llvm-commits]

https://github.com/rlavaee created https://github.com/llvm/llvm-project/pull/115830

None

>From 2e3a79dfca57dee4768cc7d5dc3b08919bd8fb4d Mon Sep 17 00:00:00 2001
From: Rahman Lavaee <rahmanl at google.com>
Date: Tue, 12 Nov 2024 06:24:00 +0000
Subject: [PATCH] [NFC,SHT_LLVM_BB_ADDR_MAP] Fix ub in ELF.cpp.

---
 llvm/lib/Object/ELF.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/llvm/lib/Object/ELF.cpp b/llvm/lib/Object/ELF.cpp
index 9a9e762d1e51d6..545a672c05c8a3 100644
--- a/llvm/lib/Object/ELF.cpp
+++ b/llvm/lib/Object/ELF.cpp
@@ -823,7 +823,6 @@ decodeBBAddrMapImpl(const ELFFile<ELFT> &EF,
     uint32_t NumBlocksInBBRange = 0;
     uint32_t NumBBRanges = 1;
     typename ELFFile<ELFT>::uintX_t RangeBaseAddress = 0;
-    std::vector<BBAddrMap::BBEntry> BBEntries;
     if (FeatEnable.MultiBBRange) {
       NumBBRanges = readULEB128As<uint32_t>(Data, Cur, ULEBSizeErr);
       if (!Cur || ULEBSizeErr)
@@ -851,6 +850,7 @@ decodeBBAddrMapImpl(const ELFFile<ELFT> &EF,
         RangeBaseAddress = *AddressOrErr;
         NumBlocksInBBRange = readULEB128As<uint32_t>(Data, Cur, ULEBSizeErr);
       }
+      std::vector<BBAddrMap::BBEntry> BBEntries;
       for (uint32_t BlockIndex = 0; !MetadataDecodeErr && !ULEBSizeErr && Cur &&
                                     (BlockIndex < NumBlocksInBBRange);
            ++BlockIndex) {