Add unzip to the tools installed in Dev Container (#552)

Author: kio-watanabe

.devcontainer/Dockerfile

@@ -9,4 +9,4 @@ RUN echo 'export CLASSPATH=:/usr/lib/opensourcecobol4j/libcobj.jar' >> ~/.bashrc
 # install dependencies
 RUN dnf update -y
 RUN dnf install -y epel-release
-RUN dnf install -y gcc make bison flex automake autoconf diffutils gettext java-21-openjdk-devel git-clang-format cppcheck libtool gettext-devel
+RUN dnf install -y gcc make bison flex automake autoconf diffutils gettext java-21-openjdk-devel git-clang-format cppcheck libtool gettext-devel unzip

cobj/pplex.c

@@ -379,7 +379,7 @@ typedef unsigned int flex_uint32_t;
  * to BEGIN to return to the state.  The YYSTATE alias is for lex
  * compatibility.
  */
-#define YY_START (((yy_start)-1) / 2)
+#define YY_START (((yy_start) - 1) / 2)
 #define YYSTATE YY_START
 /* Action number for EOF rule of a given start state. */
 #define YY_STATE_EOF(state) (YY_END_OF_BUFFER + state + 1)
@@ -2632,8 +2632,8 @@ YY_DECL {
       default:
         YY_FATAL_ERROR("fatal flex scanner internal error--no action found");
       } /* end of action switch */
-    }   /* end of scanning one token */
-  }     /* end of user's declarations */
+    } /* end of scanning one token */
+  } /* end of user's declarations */
 } /* end of yylex */
 
 /* yy_get_next_buffer - try to read in a new buffer