[mlir] Reinstate the variable

Mid-air collition of patches.

Author: isanbard

mlir/lib/Dialect/Vector/Transforms/VectorInsertExtractStridedSliceRewritePatterns.cpp

@@ -258,6 +258,7 @@ class DecomposeNDExtractStridedSlice
     int64_t stride =
         op.getStrides().getValue().front().cast<IntegerAttr>().getInt();
 
+    auto loc = op.getLoc();
     auto elemType = dstType.getElementType();
     assert(elemType.isSignlessIntOrIndexOrFloat());