Shader compile errors in `ps_blend`

[mmatyas]

I was trying to open http://en.wikipedia.org/wiki/Rust on a Samsung Galaxy S5, but got the following shader compile errors:

D/RustAndroidGlueStdouterr( 3042): Failed to compile shader: "ps_blend"
D/RustAndroidGlueStdouterr( 3042): Vertex shader compilation failed.
D/RustAndroidGlueStdouterr( 3042): ERROR: 0:24: '/' :  wrong operand types  no operation '/' exists that takes a left-hand operand of type 'int' and a right operand of type 'const float' (or there is no acceptable conversion)
D/RustAndroidGlueStdouterr( 3042): ERROR: 0:24: 'assign' :  cannot convert from 'int' to 'varying float'
D/RustAndroidGlueStdouterr( 3042): ERROR:servo: -- Shader compile failed - exiting --
D/RustAndroidGlueStdouterr( 3042): ERROR: 2 compilation errors.  No code generated.