Trivial change to fix builds

Pass the context while creating the Patternslist.

GitOrigin-RevId: 502f27e66fd9fe44cd45ec5acae3e18f15f2d8c6
diff --git a/lib/Optimizer/CodeGen/PreCGRewrite.cpp b/lib/Optimizer/CodeGen/PreCGRewrite.cpp
index eca417a..37c6e43 100644
--- a/lib/Optimizer/CodeGen/PreCGRewrite.cpp
+++ b/lib/Optimizer/CodeGen/PreCGRewrite.cpp
@@ -244,7 +244,7 @@
       return !(embox.getShape() ||
                embox.getType().cast<BoxType>().getEleTy().isa<SequenceType>());
     });
-    mlir::OwningRewritePatternList patterns;
+    mlir::OwningRewritePatternList patterns(&context);
     patterns.insert<EmboxConversion, ArrayCoorConversion, ReboxConversion>(
         &context);
     if (mlir::failed(