Warnings cleanup for CAIRO_FORMAT_INVALID.

A few more fixes required case statements to handle the addition of
CAIRO_FORMAT_INVALID.

src/cairo-qt-surface.cpp

@@ -300,6 +300,8 @@ static QImage::Format
 _qimage_format_from_cairo_format (cairo_format_t fmt)
 {
     switch (fmt) {
+    case CAIRO_FORMAT_INVALID:
+	ASSERT_NOT_REACHED;
     case CAIRO_FORMAT_ARGB32:
         return QImage::Format_ARGB32_Premultiplied;
     case CAIRO_FORMAT_RGB24:

src/drm/cairo-drm-i915-surface.c

@@ -1537,6 +1537,7 @@ i915_surface_create_for_name (cairo_drm_device_t *base_dev,
 
     switch (format) {
     default:
+    case CAIRO_FORMAT_INVALID:
     case CAIRO_FORMAT_A1:
 	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_FORMAT));
     case CAIRO_FORMAT_ARGB32:
@@ -1686,6 +1687,7 @@ i915_surface_create_from_cacheable_image_internal (i915_device_t *device,
 	format = CAIRO_FORMAT_A8;
 	bpp = 1;
 	break;
+    case CAIRO_FORMAT_INVALID:
     default:
 	ASSERT_NOT_REACHED;
 	status = _cairo_error (CAIRO_STATUS_INVALID_FORMAT);

src/drm/cairo-drm-i965-shader.c

@@ -2076,6 +2076,7 @@ i965_get_card_format (cairo_format_t format)
     case CAIRO_FORMAT_A8:
 	return BRW_SURFACEFORMAT_A8_UNORM;
     case CAIRO_FORMAT_A1:
+    case CAIRO_FORMAT_INVALID:
     default:
 	ASSERT_NOT_REACHED;
 	return 0;
@@ -2092,6 +2093,7 @@ i965_get_dest_format (cairo_format_t format)
     case CAIRO_FORMAT_A8:
         return BRW_SURFACEFORMAT_A8_UNORM;
     case CAIRO_FORMAT_A1:
+    case CAIRO_FORMAT_INVALID:
     default:
 	ASSERT_NOT_REACHED;
 	return 0;

src/drm/cairo-drm-i965-surface.c

@@ -1627,6 +1627,7 @@ i965_surface_create_for_name (cairo_drm_device_t *base_dev,
     case CAIRO_FORMAT_A8:
 	content = CAIRO_CONTENT_ALPHA;
 	break;
+    case CAIRO_FORMAT_INVALID:
     default:
     case CAIRO_FORMAT_A1:
 	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_FORMAT));

src/drm/cairo-drm-intel-surface.c

@@ -349,6 +349,7 @@ intel_surface_create_for_name (cairo_drm_device_t *device,
     cairo_status_t status;
 
     switch (format) {
+    default:
     case CAIRO_FORMAT_INVALID:
     case CAIRO_FORMAT_A1:
 	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_FORMAT));

src/drm/cairo-drm-intel.c

@@ -726,6 +726,7 @@ intel_bo_put_image (intel_device_t *dev,
 				       width, height,
 				       dst_x, dst_y);
     default:
+    case CAIRO_FORMAT_INVALID:
 	return _cairo_error (CAIRO_STATUS_INVALID_FORMAT);
     }
 
@@ -1028,6 +1029,7 @@ intel_glyph_cache_add_glyph (intel_device_t *device,
 	}
 	break;
     default:
+    case CAIRO_FORMAT_INVALID:
 	ASSERT_NOT_REACHED;
 	return _cairo_error (CAIRO_STATUS_INVALID_FORMAT);
     }
@@ -1114,6 +1116,7 @@ intel_get_glyph_cache (intel_device_t *device,
 	format = CAIRO_FORMAT_A8;
 	break;
     default:
+    case CAIRO_FORMAT_INVALID:
 	ASSERT_NOT_REACHED;
 	return _cairo_error (CAIRO_STATUS_INVALID_FORMAT);
     }

src/drm/cairo-drm-radeon-surface.c

@@ -367,6 +367,7 @@ radeon_surface_create_for_name (cairo_drm_device_t *device,
     cairo_content_t content;
 
     switch (format) {
+    default:
     case CAIRO_FORMAT_INVALID:
     case CAIRO_FORMAT_A1:
 	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_FORMAT));