make sure that we always delete the shader and not only the program

Change-Id: Ia02fb20d335e2172f607f13a0de78ea666d094f5

vcl/source/opengl/OpenGLHelper.cxx

@@ -122,6 +122,9 @@ GLint OpenGLHelper::LoadShaders(const OUString& rVertexShaderName,const OUString
     glAttachShader(ProgramID, FragmentShaderID);
     glLinkProgram(ProgramID);
 
+    glDeleteShader(VertexShaderID);
+    glDeleteShader(FragmentShaderID);
+
     // Check the program
     glGetProgramiv(ProgramID, GL_LINK_STATUS, &Result);
     if ( !Result )
@@ -140,9 +143,6 @@ GLint OpenGLHelper::LoadShaders(const OUString& rVertexShaderName,const OUString
         return 0;
     }
 
-    glDeleteShader(VertexShaderID);
-    glDeleteShader(FragmentShaderID);
-
     return ProgramID;
 }