patch 8.2.4414: solidity files are not recognized

Problem:    Solidity files are not recognized.
Solution:   Add the *.sol pattern. (Dundar Goc, closes #9792)
diff --git a/runtime/filetype.vim b/runtime/filetype.vim
index 288697b..c75fdfb 100644
--- a/runtime/filetype.vim
+++ b/runtime/filetype.vim
@@ -1795,6 +1795,9 @@
 au BufNewFile,BufRead *.hog,snort.conf,vision.conf	setf hog
 au BufNewFile,BufRead *.rules			call dist#ft#FTRules()
 
+" Solidity
+au BufRead,BufNewFile *.sol			setf solidity
+
 " SPARQL queries
 au BufNewFile,BufRead *.rq,*.sparql		setf sparql
 
diff --git a/src/testdir/test_filetype.vim b/src/testdir/test_filetype.vim
index 2e28330..eaaa39a 100644
--- a/src/testdir/test_filetype.vim
+++ b/src/testdir/test_filetype.vim
@@ -480,6 +480,7 @@
     \ 'skill': ['file.il', 'file.ils', 'file.cdf'],
     \ 'slang': ['file.sl'],
     \ 'slice': ['file.ice'],
+    \ 'solidity': ['file.sol'],
     \ 'solution': ['file.sln'],
     \ 'slpconf': ['/etc/slp.conf', 'any/etc/slp.conf'],
     \ 'slpreg': ['/etc/slp.reg', 'any/etc/slp.reg'],
diff --git a/src/version.c b/src/version.c
index cbe988b..5039e9e 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    4414,
+/**/
     4413,
 /**/
     4412,