src/ini_parser.f90: handle inline comments and whitespace

While the Fortran read statement will ignore whitespace
and ignored remaining tokens, these are problematic when
manually parsing the INI values.

src/ini_parser.f90

@@ -112,6 +112,10 @@ contains
         cycle
       end if
 
+      ! remove possible inline comments
+      sep = index(line, comment_sign, back=.true.)
+      if (sep /= 0) line = line(1:sep-1)
+
       ! split line at separator (ex. name<here>=value)
       sep = index(line, property_sep)
       if (sep == 0) then
@@ -120,8 +124,12 @@ contains
         error = ERR_SYNTAX
         exit
       end if
-      name  = trim(line(1:sep - 1))
-      value = trim(line(sep + 1:))
+      name  = line(1:sep - 1)
+      value = line(sep + 1:)
+
+      ! remove leading/trailing whitespace
+      name  = trim(adjustl(name))
+      value = trim(adjustl(value))
 
       ! call the handler
       select case (handler(section, name, value))