Fix pointer syntax error

[dmcdougall]

Fix #1304.

[dmcdougall]

@r-owen Would you mind testing this again? Teamwork! :)

[r-owen]

I'm afraid that didn't fix the problem, though it changed the error (see original error log in ticket #1304). The new error is:

gcc-4.0 -fno-strict-aliasing -fno-common -dynamic -isysroot /Developer/SDKs/MacOSX10.4u.sdk -arch ppc -arch i386 -g -O2 -DNDEBUG -g -O3 -DPY_ARRAY_UNIQUE_SYMBOL=MPL_ARRAY_API -DPYCXX_ISO_CPP_LIB=1 -I/usr/local/include -I/usr/include -I/usr/X11/include -I/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/numpy/core/include -I/usr/local/include -I/usr/include -I. -I/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/numpy/core/include -Isrc -Iagg24/include -I. -I/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7 -c src/_macosx.m -o build/temp.macosx-10.3-fat-2.7/src/_macosx.o
src/_macosx.m: In function 'FigureCanvas_write_bitmap':
src/_macosx.m: In function 'FigureCanvas_write_bitmap':
src/_macosx.m:3557: error: 'struct NSBitmapImageRep' has no member named 'pixelsWide'
src/_macosx.m:3557: error: 'struct NSBitmapImageRep' has no member named 'pixelsHigh'
src/_macosx.m:3557: error: 'struct NSBitmapImageRep' has no member named 'pixelsWide'
src/_macosx.m:3557: error: 'struct NSBitmapImageRep' has no member named 'pixelsHigh'

[dmcdougall]

@r-owen Right, so it wasn't a pointer error, it was an Objective C 2.0 properties syntax not supported by gcc-4.0. I've updated the branch to reflect the new change. Would you mind trying again?

[r-owen]

That did it! Building on MacOS X 10.4 now works!

[dmcdougall]

Awesome. I'm going to squash this to a single commit before merging.