[Swiftify] Fix crash calling cgImage.width

cgImage.width calls the C function, CGImageGetWidth(CGImageRef).
Swift representation and Clang representation of this function
seem to have a parameter number mismatch, causing swiftify function
to crash.

rdar://149691207

Author: rapidsna

lib/ClangImporter/ImportDecl.cpp

@@ -9159,6 +9159,8 @@ void ClangImporter::Implementation::swiftify(FuncDecl *MappedDecl) {
       returnHasLifetimeInfo = true;
     }
     for (auto [index, clangParam] : llvm::enumerate(ClangDecl->parameters())) {
+      if (index >= MappedDecl->getParameters()->size())
+        break;
       auto clangParamTy = clangParam->getType();
       auto swiftParam = MappedDecl->getParameters()->get(index);
       bool paramHasBoundsInfo = false;

test/Interop/ObjC/swiftify-import/getter.swift

@@ -0,0 +1,20 @@
+// REQUIRES: swift_feature_SafeInteropWrappers
+
+// RUN: rm -rf %t
+// RUN: split-file %s %t
+// RUN: %target-swift-ide-test -plugin-path %swift-plugin-dir -I %t/Inputs -enable-experimental-feature SafeInteropWrappers -print-module -module-to-print=Method -source-filename=x
+// RUN: %target-swift-frontend -plugin-path %swift-plugin-dir -I %t/Inputs -enable-experimental-feature SafeInteropWrappers %t/method.swift -dump-macro-expansions -typecheck -verify
+
+// REQUIRES: objc_interop
+
+//--- Inputs/module.modulemap
+module Method {
+    header "method.h"
+}
+
+//--- method.swift
+import CoreImage
+
+func test(_ image: CGImage) -> Int {
+  return image.width
+}