build: Fix libraw definitions (again) (#4588)

Fixes #4586
Replaces #4587

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Signed-off-by: Larry Gritz <[email protected]>

Author: lgritz

src/cmake/modules/FindLibRaw.cmake

@@ -96,7 +96,7 @@ if (LINKSTATIC)
         set (LibRaw_r_LIBRARIES ${LibRaw_r_LIBRARIES} ${LCMS2_LIBRARIES})
     endif()
     if (MSVC)
-        set (LibRaw_r_DEFINITIONS ${LibRaw_r_DEFINITIONS} LIBRAW_NODLL)
-        set (LibRaw_DEFINITIONS ${LibRaw_DEFINITIONS} LIBRAW_NODLL)
+        set (LibRaw_r_DEFINITIONS ${LibRaw_r_DEFINITIONS} -D LIBRAW_NODLL)
+        set (LibRaw_DEFINITIONS ${LibRaw_DEFINITIONS} -D LIBRAW_NODLL)
     endif()
 endif ()