[Logging] Replace Log::Printf with LLDB_LOG macro (NFC)

This patch replaces explicit calls to log::Printf with the new LLDB_LOGF
macro. The macro is similar to LLDB_LOG but supports printf-style format
strings, instead of formatv-style format strings.

So instead of writing:

  if (log)
    log->Printf("%s\n", str);

You'd write:

  LLDB_LOG(log, "%s\n", str);

This change was done mechanically with the command below. I replaced the
spurious if-checks with vim, since I know how to do multi-line
replacements with it.

  find . -type f -name '*.cpp' -exec \
  sed -i '' -E 's/log->Printf\(/LLDB_LOGF\(log, /g' "{}" +

Differential revision: https://reviews.llvm.org/D65128

llvm-svn: 366936
diff --git a/lldb/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderMacOS.cpp b/lldb/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderMacOS.cpp
index 6bc65ec..057c20f 100644
--- a/lldb/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderMacOS.cpp
+++ b/lldb/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderMacOS.cpp
@@ -173,9 +173,8 @@
           ->GetAsArray()) {
     if (JSONImageInformationIntoImageInfo(all_image_info_json_sp,
                                           image_infos)) {
-      if (log)
-        log->Printf("Initial module fetch:  Adding %" PRId64 " modules.\n",
-                    (uint64_t)image_infos.size());
+      LLDB_LOGF(log, "Initial module fetch:  Adding %" PRId64 " modules.\n",
+                (uint64_t)image_infos.size());
 
       UpdateSpecialBinariesFromNewImageInfos(image_infos);
       AddModulesUsingImageInfos(image_infos);
@@ -310,8 +309,8 @@
   Log *log(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_DYNAMIC_LOADER));
   ImageInfo::collection image_infos;
 
-  if (log)
-    log->Printf("Adding %" PRId64 " modules.", (uint64_t)load_addresses.size());
+  LLDB_LOGF(log, "Adding %" PRId64 " modules.",
+            (uint64_t)load_addresses.size());
   StructuredData::ObjectSP binaries_info_sp =
       m_process->GetLoadedDynamicLibrariesInfos(load_addresses);
   if (binaries_info_sp.get() && binaries_info_sp->GetAsDictionary() &&