mesa/st: fix unused variable warnings

Reviewed-by: Grazvydas Ignotas <notasas@gmail.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>

src/mesa/state_tracker/st_cb_bitmap.c

@@ -301,8 +301,9 @@ draw_bitmap_quad(struct gl_context *ctx, GLint x, GLint y, GLfloat z,
       /* XXX if the bitmap is larger than the max texture size, break
        * it up into chunks.
        */
-      GLuint maxSize = 1 << (pipe->screen->get_param(pipe->screen,
-                                    PIPE_CAP_MAX_TEXTURE_2D_LEVELS) - 1);
+      GLuint MAYBE_UNUSED maxSize =
+         1 << (pipe->screen->get_param(pipe->screen,
+                                       PIPE_CAP_MAX_TEXTURE_2D_LEVELS) - 1);
       assert(width <= (GLsizei) maxSize);
       assert(height <= (GLsizei) maxSize);
    }

src/mesa/state_tracker/st_cb_drawpixels.c

@@ -464,7 +464,6 @@ make_texture(struct st_context *st,
 
    {
       struct pipe_transfer *transfer;
-      GLboolean success;
       GLubyte *dest;
       const GLbitfield imageTransferStateSave = ctx->_ImageTransferState;
 
@@ -497,9 +496,9 @@ make_texture(struct st_context *st,
                               format, type,     /* src format/type */
                               pixels,           /* data source */
                               unpack);
-         success = GL_TRUE;
       }
       else {
+         bool MAYBE_UNUSED success;
          success = _mesa_texstore(ctx, 2,           /* dims */
                                   baseInternalFormat, /* baseInternalFormat */
                                   mformat,          /* mesa_format */
@@ -509,13 +508,13 @@ make_texture(struct st_context *st,
                                   format, type,     /* src format/type */
                                   pixels,           /* data source */
                                   unpack);
+
+         assert(success);
       }
 
       /* unmap */
       pipe_transfer_unmap(pipe, transfer);
 
-      assert(success);
-
       /* restore */
       ctx->_ImageTransferState = imageTransferStateSave;
    }
@@ -570,7 +569,7 @@ draw_textured_quad(struct gl_context *ctx, GLint x, GLint y, GLfloat z,
    const unsigned fb_width = _mesa_geometric_width(ctx->DrawBuffer);
    const unsigned fb_height = _mesa_geometric_height(ctx->DrawBuffer);
    GLfloat x0, y0, x1, y1;
-   GLsizei maxSize;
+   GLsizei MAYBE_UNUSED maxSize;
    boolean normalized = sv[0]->texture->target == PIPE_TEXTURE_2D;
    unsigned cso_state_mask;
 

src/mesa/state_tracker/st_cb_texture.c

@@ -2396,7 +2396,7 @@ copy_image_data_to_texture(struct st_context *st,
 {
    /* debug checks */
    {
-      const struct gl_texture_image *dstImage =
+      const struct gl_texture_image MAYBE_UNUSED *dstImage =
          stObj->base.Image[stImage->base.Face][dstLevel];
       assert(dstImage);
       assert(dstImage->Width == stImage->base.Width);

src/mesa/state_tracker/st_format.c

@@ -1028,7 +1028,7 @@ test_format_conversion(struct st_context *st)
 
       pf = st_mesa_format_to_pipe_format(st, i);
       if (pf != PIPE_FORMAT_NONE) {
-         mesa_format mf = st_pipe_format_to_mesa_format(pf);
+         mesa_format MAYBE_UNUSED mf = st_pipe_format_to_mesa_format(pf);
          assert(mf == i);
       }
    }
@@ -1044,7 +1044,8 @@ test_format_conversion(struct st_context *st)
          continue;
 
       if (mf != MESA_FORMAT_NONE) {
-         enum pipe_format pf = st_mesa_format_to_pipe_format(st, mf);
+         enum pipe_format MAYBE_UNUSED pf =
+            st_mesa_format_to_pipe_format(st, mf);
          assert(pf == i);
       }
    }