Fix function return type

Test: TreeHugger
Change-Id: I2336a0c2bf3f71cc0b0bc1ef491a1043e88f359e
Merged-In: I2336a0c2bf3f71cc0b0bc1ef491a1043e88f359e

services/core/jni/com_android_server_am_CachedAppOptimizer.cpp

@@ -123,7 +123,7 @@ static int getAnonPageAdvice(const Vma& vma) {
     }
     return -1;
 }
-static bool getAnyPageAdvice(const Vma& vma) {
+static int getAnyPageAdvice(const Vma& vma) {
     if (vma.inode == 0 && !vma.is_shared) {
         return MADV_PAGEOUT;
     }