Simplify Boolean expressions

This patch simplifies boolean expressions acorss LLDB. It was generated
using clang-tidy with the following command:

run-clang-tidy.py -checks='-*,readability-simplify-boolean-expr' -format -fix $PWD

Differential revision: https://reviews.llvm.org/D55584

llvm-svn: 349215
diff --git a/lldb/tools/debugserver/source/RNBServices.cpp b/lldb/tools/debugserver/source/RNBServices.cpp
index b2f4910..89c4c27 100644
--- a/lldb/tools/debugserver/source/RNBServices.cpp
+++ b/lldb/tools/debugserver/source/RNBServices.cpp
@@ -57,9 +57,9 @@
 
       const pid_t pid = proc_info.kp_proc.p_pid;
       // Skip zombie processes and processes with unset status
-      if (kinfo_user_matches == false || // User is acceptable
-          pid == our_pid ||              // Skip this process
-          pid == 0 ||                    // Skip kernel (kernel pid is zero)
+      if (!kinfo_user_matches || // User is acceptable
+          pid == our_pid ||      // Skip this process
+          pid == 0 ||            // Skip kernel (kernel pid is zero)
           proc_info.kp_proc.p_stat ==
               SZOMB || // Zombies are bad, they like brains...
           proc_info.kp_proc.p_flag & P_TRACED || // Being debugged?