[cmake-developers] [PATCH] Wrap ARGV1 and ARGV2 in quotes to avoid errors when they are empty

[Aurélien Gâteau]

When find_dependency is called like this:

	find_dependency(Foo "")

CMake fails with:

CMake Error at 
/home/aurelien/opt/kf5/share/cmake-3.0/Modules/CMakeFindDependencyMacro.cmake:34 
(if):
  if given arguments:

    "STREQUAL" "EXACT"

  Unknown arguments specified

Attached patch fixes this.

Aurélien
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