[llvm-readobj/llvm-readelf] - Report a warning instead of a error when dumping a broken dynamic section.

It does not make sence to stop dumping the object if the broken
dynamic section was found. In this patch I changed the behavior from
"report an error" to "report a warning". This matches GNU.

Differential revision: https://reviews.llvm.org/D64472

llvm-svn: 365762
diff --git a/llvm/tools/llvm-readobj/ELFDumper.cpp b/llvm/tools/llvm-readobj/ELFDumper.cpp
index b70f69c..589199c 100644
--- a/llvm/tools/llvm-readobj/ELFDumper.cpp
+++ b/llvm/tools/llvm-readobj/ELFDumper.cpp
@@ -134,8 +134,12 @@
     const Type *Start = reinterpret_cast<const Type *>(Addr);
     if (!Start)
       return {Start, Start};
-    if (EntSize != sizeof(Type) || Size % EntSize)
-      reportError("Invalid entity size");
+    if (EntSize != sizeof(Type) || Size % EntSize) {
+      // TODO: Add a section index to this warning.
+      reportWarning("invalid section size (" + Twine(Size) +
+                    ") or entity size (" + Twine(EntSize) + ")");
+      return {Start, Start};
+    }
     return {Start, Start + (Size / EntSize)};
   }
 };