LibGfx: Split VERIFY statements in various Bitmap class methods

This could aid debugging in many cases, and it doesn't break any
functionality, so let's ensure it's easier to understand in which way a
provided value is out of range.

Userland/Libraries/LibGfx/Bitmap.h

@@ -269,13 +269,15 @@ private:
 
 inline u8* Bitmap::scanline_u8(int y)
 {
-    VERIFY(y >= 0 && y < physical_height());
+    VERIFY(y >= 0);
+    VERIFY(y < physical_height());
     return reinterpret_cast<u8*>(m_data) + (y * m_pitch);
 }
 
 inline u8 const* Bitmap::scanline_u8(int y) const
 {
-    VERIFY(y >= 0 && y < physical_height());
+    VERIFY(y >= 0);
+    VERIFY(y < physical_height());
     return reinterpret_cast<u8 const*>(m_data) + (y * m_pitch);
 }
 
@@ -292,21 +294,24 @@ inline ARGB32 const* Bitmap::scanline(int y) const
 template<>
 inline Color Bitmap::get_pixel<StorageFormat::BGRx8888>(int x, int y) const
 {
-    VERIFY(x >= 0 && x < physical_width());
+    VERIFY(x >= 0);
+    VERIFY(x < physical_width());
     return Color::from_rgb(scanline(y)[x]);
 }
 
 template<>
 inline Color Bitmap::get_pixel<StorageFormat::BGRA8888>(int x, int y) const
 {
-    VERIFY(x >= 0 && x < physical_width());
+    VERIFY(x >= 0);
+    VERIFY(x < physical_width());
     return Color::from_argb(scanline(y)[x]);
 }
 
 template<>
 inline Color Bitmap::get_pixel<StorageFormat::Indexed8>(int x, int y) const
 {
-    VERIFY(x >= 0 && x < physical_width());
+    VERIFY(x >= 0);
+    VERIFY(x < physical_width());
     return Color::from_rgb(m_palette[scanline_u8(y)[x]]);
 }
 
@@ -327,19 +332,22 @@ inline Color Bitmap::get_pixel(int x, int y) const
 template<>
 inline void Bitmap::set_pixel<StorageFormat::BGRx8888>(int x, int y, Color color)
 {
-    VERIFY(x >= 0 && x < physical_width());
+    VERIFY(x >= 0);
+    VERIFY(x < physical_width());
     scanline(y)[x] = color.value();
 }
 template<>
 inline void Bitmap::set_pixel<StorageFormat::BGRA8888>(int x, int y, Color color)
 {
-    VERIFY(x >= 0 && x < physical_width());
+    VERIFY(x >= 0);
+    VERIFY(x < physical_width());
     scanline(y)[x] = color.value(); // drop alpha
 }
 template<>
 inline void Bitmap::set_pixel<StorageFormat::RGBA8888>(int x, int y, Color color)
 {
-    VERIFY(x >= 0 && x < physical_width());
+    VERIFY(x >= 0);
+    VERIFY(x < physical_width());
     // FIXME: There's a lot of inaccurately named functions in the Color class right now (RGBA vs BGRA),
     //        clear those up and then make this more convenient.
     auto rgba = (color.alpha() << 24) | (color.blue() << 16) | (color.green() << 8) | color.red();