Update RasterImageLayer.java

[ma15569]

Patch to solve Issue #113 (Raster with a single value are not visible without acting on raster styles)

[edeso]

hey @ma15569

i took your patch but needed to fix

• indention, you used tabs but the source file had spaces only

also took the freedom to remove the one of the

rasterSymbology.addColorMapEntry(min, Color.GRAY);
rasterSymbology.addColorMapEntry(max, Color.GRAY);

as they would add the same entry if min == max

[ma15569]

• indention, you used tabs but the source file had spaces only Yes. I tried to remove all from Eclipse but I failed

• also took the freedom to remove the one ... I realized later, since min=max there is no need to have both

Thanks Ede