wined3d: Fix a few FIXME's.

dlls/wined3d/drawprim.c

@@ -1820,7 +1820,8 @@ UINT numberOfvertices, UINT numberOfIndicies, GLenum glPrimType, const void *idx
             /* check for any errors */
             glGetIntegerv( GL_PROGRAM_ERROR_POSITION_ARB, &errPos );
             if (errPos != -1) {
-                FIXME("HW VertexShader Error at position: %d\n%s\n", errPos, glGetString( GL_PROGRAM_ERROR_STRING_ARB) );
+                FIXME("HW VertexShader Error at position %d: %s\n",
+                      errPos, debugstr_a((const char *)glGetString(GL_PROGRAM_ERROR_STRING_ARB)));
             }
 
             /* disable any attribs */

dlls/wined3d/pixelshader.c

@@ -1512,7 +1512,8 @@ inline static VOID IWineD3DPixelShaderImpl_GenerateProgramArbHW(IWineD3DPixelSha
         if (glGetError() == GL_INVALID_OPERATION) {
             GLint errPos;
             glGetIntegerv(GL_PROGRAM_ERROR_POSITION_ARB, &errPos);
-            FIXME("HW PixelShader Error at position: %d\n%s\n", errPos, glGetString(GL_PROGRAM_ERROR_STRING_ARB));
+            FIXME("HW PixelShader Error at position %d: %s\n",
+                  errPos, debugstr_a((const char *)glGetString(GL_PROGRAM_ERROR_STRING_ARB)));
             This->prgId = -1;
         }
     }

dlls/wined3d/vertexshader.c

@@ -1650,7 +1650,8 @@ inline static VOID IWineD3DVertexShaderImpl_GenerateProgramArbHW(IWineD3DVertexS
       if (glGetError() == GL_INVALID_OPERATION) {
           GLint errPos;
           glGetIntegerv(GL_PROGRAM_ERROR_POSITION_ARB, &errPos);
-          FIXME("HW VertexShader Error at position: %d\n%s\n", errPos, glGetString(GL_PROGRAM_ERROR_STRING_ARB));
+          FIXME("HW VertexShader Error at position %d: %s\n",
+                errPos, debugstr_a((const char *)glGetString(GL_PROGRAM_ERROR_STRING_ARB)));
           This->prgId = -1;
       }
   }