Fix memory leak found by clang static analyzer.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123487 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/llvm-ld/llvm-ld.cpp b/tools/llvm-ld/llvm-ld.cpp
index 475fcf4..442c4da 100644
--- a/tools/llvm-ld/llvm-ld.cpp
+++ b/tools/llvm-ld/llvm-ld.cpp
@@ -178,7 +178,7 @@
 
   // Allocate a new environment list.
   char **newenv = new char* [entries];
-  if ((newenv = new char* [entries]) == NULL)
+  if (newenv == NULL)
     return NULL;
 
   // Make a copy of the list.  Don't forget the NULL that ends the list.