Follow-up to r28529: Use correct functions to canonicalize paths. At least this
fixes the following problem: applying a patch with file deletions results in
these files are missing.

Index: src/SVN/SVNPatch.cpp
===================================================================
--- src/SVN/SVNPatch.cpp	(revision 29343)
+++ src/SVN/SVNPatch.cpp	(working copy)
@@ -317,7 +317,7 @@
     svn_error_clear(svn_client_create_context2(&ctx, SVNConfig::Instance().GetConfig(m_pool), scratchPool));
 
     const char* patchAbspath = nullptr;
-    err                      = svn_uri_canonicalize_safe(&patchAbspath, nullptr,
+    err                      = svn_dirent_canonicalize_safe(&patchAbspath, nullptr,
                                     CUnicodeUtils::GetUTF8(m_patchFile),
                                     scratchPool, scratchPool);
     if (err)
@@ -329,7 +329,7 @@
     }
 
     const char* localAbspath = nullptr;
-    err                      = svn_uri_canonicalize_safe(&localAbspath, nullptr,
+    err                      = svn_dirent_canonicalize_safe(&localAbspath, nullptr,
                                     CUnicodeUtils::GetUTF8(m_targetPath),
                                     scratchPool, scratchPool);
     if (err)
@@ -587,7 +587,7 @@
     apr_array_header_t* targets = apr_array_make(scratchPool, 1, sizeof(const char*));
 
     const char* canonicalizedPath = nullptr;
-    svn_error_clear(svn_uri_canonicalize_safe(&canonicalizedPath, nullptr, CUnicodeUtils::GetUTF8(path), scratchPool, scratchPool));
+    svn_error_clear(svn_dirent_canonicalize_safe(&canonicalizedPath, nullptr, CUnicodeUtils::GetUTF8(path), scratchPool, scratchPool));
     if (canonicalizedPath == nullptr)
     {
         apr_pool_destroy(scratchPool);