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

experimental/Networking/SkSockets.h

@@ -24,7 +24,7 @@
 class SkSocket {
 public:
     SkSocket();
-    ~SkSocket();
+    virtual ~SkSocket();
 
     enum State {
         kError_state,
@@ -152,7 +152,7 @@ protected:
 class SkTCPServer : public SkSocket {
 public:
     SkTCPServer(int port = DEFAULT_PORT);
-    ~SkTCPServer();
+    virtual ~SkTCPServer();
 
     /**
      * Accept any incoming connections to the server, will accept 1 connection

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();
     }

src/pdf/SkPDFShader.h

@@ -60,6 +60,7 @@ protected:
     static void RemoveShader(SkPDFObject* shader);
 
     SkPDFShader();
+    virtual ~SkPDFShader() {};
 
     virtual bool isValid() = 0;
 };

third_party/glu/README.skia

@@ -42,3 +42,6 @@ The following changes were made in order to incorporate this code:
 
   - In sweep.c, added explicit cast to GLfloat in VertexWeights() to silence 
     compiler complaint
+
+  - In mesh.c in method __gl_meshMakeEdge, added memory cleanup when
+    MakeEdge failed

third_party/glu/libtess/mesh.c

@@ -291,7 +291,12 @@ GLUhalfEdge *__gl_meshMakeEdge( GLUmesh *mesh )
   } 
 
   e = MakeEdge( &mesh->eHead );
-  if (e == NULL) return NULL;
+  if (e == NULL) {
+     memFree(newVertex1);
+     memFree(newVertex2);
+     memFree(newFace);     
+     return NULL;
+  }
 
   MakeVertex( newVertex1, e, &mesh->vHead );
   MakeVertex( newVertex2, e->Sym, &mesh->vHead );