Fixed minor c++ issues found by cppcheck

http://codereview.appspot.com/6127049/



git-svn-id: http://skia.googlecode.com/svn/trunk@3771 2bbb7eff-a529-9590-31e7-b0007b416f81

2 files changed, 3 insertions, 2 deletions

diff --git a/src/pdf/SkPDFShader.cpp b/src/pdf/SkPDFShader.cpp
index c3c3cd060c..152c693562 100644
--- a/src/pdf/SkPDFShader.cpp
+++ b/src/pdf/SkPDFShader.cpp
@@ -303,7 +303,7 @@ public:
 class SkPDFFunctionShader : public SkPDFDict, public SkPDFShader {
 public:
     explicit SkPDFFunctionShader(SkPDFShader::State* state);
-    ~SkPDFFunctionShader() {
+    virtual ~SkPDFFunctionShader() {
         if (isValid()) {
             RemoveShader(this);
         }
@@ -328,7 +328,7 @@ private:
 class SkPDFImageShader : public SkPDFStream, public SkPDFShader {
 public:
     explicit SkPDFImageShader(SkPDFShader::State* state);
-    ~SkPDFImageShader() {
+    virtual ~SkPDFImageShader() {
         RemoveShader(this);
         fResources.unrefAll();
     }
diff --git a/src/pdf/SkPDFShader.h b/src/pdf/SkPDFShader.h
index afa63e7631..f41bdf038e 100644
--- a/src/pdf/SkPDFShader.h
+++ b/src/pdf/SkPDFShader.h
@@ -60,6 +60,7 @@ protected:
     static void RemoveShader(SkPDFObject* shader);
 
     SkPDFShader();
+    virtual ~SkPDFShader() {};
 
     virtual bool isValid() = 0;
 };