[GLES2] Fixed some issues with glGetUniformi(f/v) function
[GLES2] Fixed some issues with glGetUniformi(f/v) function

ptitSeb/glshim,ptitSeb/gl4es,ptitSeb/glshim,ptitSeb/glshim,ptitSeb/glshim,ptitSeb/gl4es,ptitSeb/gl4es,ptitSeb/gl4es