[CIR][NFC] Fix few unused vars and tablegen format

Author: bcardosolopes

clang/include/clang/CIR/Dialect/IR/CIROps.td

@@ -3334,8 +3334,8 @@ def CatchParamOp : CIR_Op<"catch_param"> {
   }];
 
   let extraClassDeclaration = [{
-    bool isBegin() { return getKind() ==  mlir::cir::CatchParamKind::begin; }
-    bool isEnd() { return getKind() ==  mlir::cir::CatchParamKind::end; }
+    bool isBegin() { return getKind() == mlir::cir::CatchParamKind::begin; }
+    bool isEnd() { return getKind() == mlir::cir::CatchParamKind::end; }
   }];
 
   let hasVerifier = 1;

clang/lib/CIR/Lowering/DirectToLLVM/LowerToLLVM.cpp

@@ -3602,7 +3602,6 @@ class CIRCatchParamOpLowering
             op->getParentOfType<mlir::LLVM::LLVMFuncOp>());
         auto catchFn = rewriter.create<mlir::LLVM::LLVMFuncOp>(
             op.getLoc(), cxaBeginCatch, catchFnTy);
-        sourceSymbol = catchFn;
       }
       rewriter.replaceOpWithNewOp<mlir::LLVM::CallOp>(
           op, mlir::TypeRange{llvmPtrTy}, cxaBeginCatch,
@@ -3622,7 +3621,6 @@ class CIRCatchParamOpLowering
             op->getParentOfType<mlir::LLVM::LLVMFuncOp>());
         auto catchFn = rewriter.create<mlir::LLVM::LLVMFuncOp>(
             op.getLoc(), cxaEndCatch, catchFnTy);
-        sourceSymbol = catchFn;
       }
       rewriter.create<mlir::LLVM::CallOp>(op.getLoc(), mlir::TypeRange{},
                                           cxaEndCatch, mlir::ValueRange{});